頁一第張八第 日六十月三年卯丁曆夏
WAH KIU YAT PO
grid Y-deffeusing
plates
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(b) The voltage amplitude
of the displayed.
voltage (ive, voltage
across A) in
2 émxb V/cm-12 V
But the total resistance of the circuit is 30nti.. 3 times that of R)
The voltage
مة
To
CRU
UR
12V
1987中學會考 試題預習專欄
4W
Cathode
X-deffecting
plates
100
100
$2000. Itarns
turns
Anode
power
cable
}
D
find
物理(廿九)
(a) the current through
the lamp
amplitude of the
(b) the current through
the transmission cáble
a. C. Qurce
supply
(b) Time base
Usually a saw-tooth voltage is applied to the x-plates causing the
-3x4=12V (Anw.)
(c)
Current through R/A
electron beam sweeps from left to right
0.4
continuously, The
frequency of which
(Ans.)
the time base.
(c) the power loss in the
transmission cable
(d) voltage across XY.
明德出版社
MILL & DALE PRESS
Revision Exercises
Solution:
for
Cert. Exam. (1987)
(a)
P. 224 ===
PHYSICS (29)
Can
(b) Using IpEp ̃Iss
20000
co 100
=2400V {1}{2400)=(4)(12)
1-0,01 A
(c) Pover long"
2402V
XY
00
determines the reading of
Voltage
ААА
Example;
-0.4
time/s
time
9.7 Electronics
(A) Solid state diode. (1). Circuit symbol
Figure 2 below shows the display of the voltage output of Toad R in the circuit (Figure 1).
B.C.
-200]
Load
То
100.8.0.
Pigure 1
Transmission of
electrical power
Example:
If 12 kW of power is to be transmitted through. cables of resistance 20, '(a) Find the power loss
in the cables if
power is transitted
At
(i) 200V
(ii)1000V
(iii)4000v
(b) What conclusion
you drawn from the results of part (a).
Solution:
(a) P=12000W
R-201
Using P=iv
(1) 12000-1(20v)
I=60A
Power loss
-12R =(60)2(2)
=7200W (Ans.)
(ii) 12000=1(400)
.*. I=30A
Power loss
=(30)2(2)
=1800W
(iii) 12000×1(4000)
Power loss
» ર
=(0,01) (200)
=0.02W
(4) VAR=VCD+IR
AB
=2400+(0,01)(200)
-2402820000
=12.01V (Ans.)
9.6 Cathode ray tube:
Properties of
Cathode rays
1. carry negative
change
travel in
straight line
3. can be deflected
by electric ar magnetic field
4. cause fluorescene 3. produce heating
effect when strike objects
b; produce x-rays
when hitting on certain metals 7. initiate from
cathode,
Applications:
(a) Thermionic diode
cathode
If the time base is per cn and the vertical. scale is UV per cm, estimate
(a) the frequency of «.c.
(b) the vel bäge amplitude
of the a'c, source,
(c) sketch the current-
time graph showing the variation of current through R.
Solution:
Tlie corresponding length for one
complete cycle is 4cm
period of the
source
T=4x5 s
=1·00 ms
I-JA
=(3)2(2)
-18W
(ANS.)
(Ans.)
enode.
heater
(b) High voltage
tranamission reduces
power loss.
Example 2:
The figure showa a electrical transmission system. The power cable is of total resistance 2000. If the
transferences used are 100% efficient and the 12V, 24W lamp is operated
at ita correct ratings,
(B) Cathode ray
Sacilloscope (c.n.) (a) Construction of
simple C.R..
advocacy of continued allisuce with the
1987中學會考
試題預習專欄
歷史( 廿九 )
明灩出版社
MILL & DALE PRESS
Revision Exercises
for
Cert. Exam. (1987)
HISTORY (29)
KMT-CCP relations, 1928- 1936
Despite the national unificatron of 1928, the KMT government is Nanking had incomplete control over the country at large. Former warlords remained in power. Within the KMT party, factional disunity was serious. Chiang Kai-shek's powe2- depended on the army and conservative forces like businessmen and landlords. Because of these factora, the internal reforms attempted by the Nunking government generally failed to solve the
serious Aocial-econonie problems in the extensive countryside. In the eyes of the people, the KMT became more and more corrupt. and reactionary: The BCP, on the other hand experimented with different policies of expansion after it break with the KMT, First, it attempted violent uprisings, but 11 ended, in failure.
The attempted promotion
of labour movementsbin
the cities was equally unsuccessful and cube-
效廣法刊明香
A
Mao Tse-tung's policy
middle-class like the
KMT was hopeless.
Only
peasants and
of organizing the
establishing Communist
territorial bases
systematically was
workable. In so doing Naw
was not following
Communist doctrines
strictly; he was changing
them to suit China's particular condtions. Through effective organization and propaganda, every village that the Communists controlled was turned into a fighting base: A guerrilla militery strategy was employed. The purpose was systematically build up and enlarge, strong territorial bases in a prolonged armed struggle with the KMT.
to
These policies were successful at first. However, after 1931, a group of Soviet-trained young Communists challenged. Mao's leadership, and many of his policies were
reversed. Violent land confiscation was practised, and guerrilla warfare was given upė This helped to explain why social support for the CCP decreased and the Kangsi base was consequently lost. I late 1954, breaking through the KMT's siege, the Communists began the. Long March (1934-35) north-westward to Yenan in Northern Shensi In 193, Chiang Kai-shek : tried to destroy the Communists in Yenan, one and for all. However, there occurred, the Sing Incident in late 1930. when Chiang was kidnapped by one of his generals
刊告律登令港月九報 物之性有指政三三遠 有質關定府日叁在
1cm
Figure 2
記
10
Frequency
=10 Hz
(Aus.)
and was forced to agree Luan alliance with the CCP against Japanese aggression. Thus the Second KMT-CCP Coalition (1935). It was born against a background of widespread Chinese demand for uternal unity against the Japanese aggressore
a strong force of Chinese nationalism cleverly made use of by the Communista. The effects of the Coalition were the quickening of the out- break of the Second Sino- Japanese War (1937-45), during which the KMT vas weakened but the CCP strengthened. Japan's expansion towards China In the late 19208, Japan's foreign policy of peaceful, economic expansion was becoming increasingly unrealistic. This made the radical Japanese. militariste, many of whom were middle-rank officers, to disobey their superiors. Thus intervened in China's unification in Shantung, and at the same time attempted to gain military control of Manchuria in 1928. Both actions failed. But Japanese interests in Manchurie were
threatened (like the KMT's attempts at re- establishing control over the region and thé growing Russian power in Northeast Asia). From September 18, 1931, onwards, without orders from above, the middle- rank Japanese officers in Manchuria tried to conquer the region. Chiang Kai-shek did unt militarily resist the conquest, non did the Western powerя
The effects of the.
conventional current.
conventional, current
(2) Solid state diode
characteristic.
When the Jiode is forward bissed, current flows through and increases as hina voltage increases. Whew the diode is
reverse biased,
no current flows..
Current/A
40-
20+
Voltage/V
U.f
(3) Applications
(1) Half-wave
rectification
a.c.
supply.
(ii) Full-wave
rectification
Manchurian Incident were far-reaching. In Japan, it indirectly led to the downfall of the party rule, marked the rise of militarism, and started the Japanese Empire that eventually led to the Pacific War of 1941. In China, while Chinese nationalism grew more political in nature, Chiang Kai-slekts policy of destroying the CCP before defending China against Japanese aggression became more and more unpopular. The Manchurian conquest proved to be only the beginning of more Japanese aggression, By 1936, North Chine had been brought under indirect Japanese control.
Although generally satisfied with the gains made, Japan nevertheless declared war on China after the China Incident of July 7, 1937. The incident was not planned by the Japanese militarists for armed expansion. But the IT and the CCP, who had earlier become allies, considered it & planned aggression and thus ahowed a forceful
attitude, which led the Japanese to adopt an even more forceful policy. War was the reault.
The Second Sino-Japanese War (1937-1945). proved * to be a burden for Japan. Internally, totalitarian rule wis practised, which therefore completed the rise of Japanese militarism, ¡Externally, the Japaness aggression in Ching aroused a hardened American
attitude which in the
end led to the outbreak of the Pacific War in
力廣龐讀印柯必社必學必家必工 强告大者刷式有 强告大者刷式有團讀生傭庭覽商
HE
一期星 日三十月四年七八九一曆公年六十七國民華中
Lond
TO CRO
經濟(廿九)
明鴻出版社、 MILL & DALE PRESS
Revision Exercises
for
Cert. Exam. (1987)
ECONOMICS (29)
1.
Trade and Judustrial Development in Hong Kong
A. The Government's Belg
To facilitate the trade and industrial development, the long Kong Government provides u59) stauve in respect of the following services: Institutional Services
The government hus helped to provide institutional assistance for trusle and industry through the Hong Kong Trade Development Council, the Hong Kong Export Credit Insurance Corporation and the Hong Kong Productivity Centre. These orgainizations are financed from public funds and provide sales promulann services, a credit änsurance scheme, Various types of training and fenisultancy services
respectively.
+22
The government also provides lumini and other support for bodies s
the Federation of Hong Kong Industries, the Hong Kong Management Association, the long Kong Industrial Desenta Council and the eng Kong. Packaging Council.
2. Industrial Training,
The two.
universities in Hong Long provide technological training in engineering, architecture and electronic science. The Hong Kong Polytechnic and the City Polytechnic provides technical and voortional
1941. As for China, the KMT and the CCP formally allied with each other but in fact failed to cooperate. During the war, the CCP Ma
strengthened, but the KMT was weakened. Both processes help to
explain the Communist
victory of 1949.
英文( 廿九 )
Revision Exercises
for
Cert. Exam, (1987) ENGLISH (29) CITY EDUCATIONAL PRESS
Dear Students,
Today I'd like to give you some more practice in oral responses. As this type of questions appears in Paper II every year,you are advised to have more practice in it.
Select the best of the choices offered for each of the situations. All re- sponses must be polite. 1. X Two teas please,
waiter!
Ys ....
A. I certainly do, sir. B. Right away, sir.
0. I cannot believe it. D. He's not here now.. 2. X:
YI couldn't agree
more.
A. May I go out for a
walk?
B. What are you talking
about?
C. Gambling should not
be legalised in Hong Kong.
D. I'm sure you'll, be
successful.
3. X. Would you mind if I
opened the window?
A. Never mind.
B. Not at all.
C. Yes I don't,
D. No,thank you.
education through its Tull-time and port-time courses.
Bothuiversities anil the polytechnics are financed from public funds.
The Government also runa some technical. institutes which provide technical
training at craftsman and technician ́levels and have full-time and part-time courses)
The Government also
encourages and assists
companies to start
"apprenticeship
training schemes so
that u dequate
supply of techuically qualified manpower for træle and industry is ensured.
5. Industrial Land Policy
Jndustrial sites
are normally sold by means of public auction, tender or the Letter exchange- system. However, the government's sale of land is Sometimes made on special terms in order to accommodate thuse industries that are land and capital intensive or pass a high level of technology the
presence of which is considered to be economically desirable to Hong Kong.
Furthermore,
Industrial Estates Corporation has been set up to develop and manage industrial estates. The first industrial estate
under,construction is at Tai Po and the proposed second site is at Yuen Long. B. other Services- 1. Hanking
By coordinating with the government, the Chamber helps to promete trade and attract new industries" to Hong Kong. It is
now સં
Lember of the International Chamber of Commerce and the Federation of Commonwealth Chambers:
of Commerce.
Banks in Hong Kong are well specialised infinueing inter- national trade as well as financing domestic activities. They maintain extensive credit information and commercial
introduction services for their clients and for those who wish to establish business with Husig Kong.
At the end of 1979, there were 115
4. X: Could I have the su-
gar please?
Y:
A. This is the sugar.
B. By all meana.
C. Yes, you could.
D. Here you are.
5. X: I'm sorry about that
Y:
A. About what?
B. That's all right.
C. Oh, please don't.
D. There's no need to
be sorry.
6. X Merry Christmas.
Y: ...
A. Merry Christmas. B. With best wishes. ✪. Thank you very much. D. Thanks,the same to
you.
7. X: You know what? I've
got a pass in the exam.
A. So you can. B. Are you really?
C. Congratulations. D. I'm grateful.
8. X I'm afraid I can't
go shopping with you this afternoon.
A. Oh, what a pity. B. I'm afraid not. C. Shame on you.
D. You ought tà be
aphazed.
9. X. Flease take a seat,
Y....
A. Sure.
B. Thank you.
C. Yes,certainly. D. Don't be polite.
10. X Will you join us.
for dinner?
"Y.. I've got a lot of work to do.
Ficensed banks in Hong Kong and many of them. have branches und correspondents all
over the world. Hence. Hong Kong can offer a comprehensive banking service in an inter- novionul scale, In addition, the absence |
of any exchange control regulations further allows a minimum of formality and a quick handling of transactions." 2. insurance.
A
Insurance slau contributes substantially to the growth and prosperity of Hong Kong and it plays a critical role. in trade unl industrial develops
ment. There are many insurance companies represented in Hong Kong either through their head offices, brunch offices or through agencies held by merchant houses. All classes of
insurance are readily available here. Chambers of Commerce.
The Hong Kong General Chamber of Commerce is the earliest estalilished trade and industrial organization in Hong Kong. Its membership represents all
brauches of commerce and industry and is represented on a number of government boards and committees. Its main purposes are to foster trade and industry, to protect the transaction of business and to arbitrate in commercial disputes. The Chamber is a Berber of the Inter- uational Chamber of Commerce and the Federation, of Common- wealth Chambers of Commerce.
4. Other organizations
other organizations which help to probate and facilitate trade and productivity include the Federation of Hong Kong Industries, the Chinese Manufacturers Association of Hong Kong, the Hong Kong Exporters!
Association, the Amercian Chamber of Commerce, the Hong Kong Japanese Chaber of Commerce and Industry, the Hong Kong Shippers Council and the Hong Kong' Management Association,
all right.
11. X: Let me see you home
A. It's wonderful! B. Oh, you're being, po-
lite.
C. Oh, that's very kind
of you.
D. Certainly, I'll let
you.
12. X: Do you think it's worth my applying for the job?
Y: Wall,...
A. it's a low-paid job. B. there's no harm in
trying.
C. you think you're
qualified?
D. How do I know?
13. X Hould you mind turn-
ing down the volume of your radio?
Y: I don't know it was disturbing you.
A. Sorry.
B. Really.
c. Truly.
D. Perhaps.
14. X: Give my best re-
gards to John.
༣༔ ཟེ་
A. The same to you,
B. He'll be grateful.
G. Thanks, I certainly
will. .....
D. Yes, I'll give them
to hims
15. XI wonder if I could
speak to Mr Chan?
Y1
A. Yes, you could.
B. Yae,not too soon. C. Just & minute;
please.
D. What's the matter
with him?
Answers
A. I hope not. B. I don't think so.
1. B -2. C
3. B
4. D5. B
6. D
7..0
8.
9. B
10.c
11.
12. B
13.A
14. 15. 0.
c. If you don't mind, I'd rather not.
D. It will be quite
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