WAH KIU YAT PO
報日僑華
五期星 日九十月一十年二八九一屆公平一十七國民華中
計統月上國美
跌下產生 起報價批
-下降是過去十五個月的第三次下降。
傾斜,以免躜若火力蕃為
夫屬下格拉索利 一位來利集團後,便可直
料集團的一段。
·格拉索利美國公司
示:
七點五率脹通
微上
开跌范
國工業生產上映】。所有重要工具都能與 字顯示,上月說「低和振動式平板壓實器 _(華盛頓十 以外,快遠發展挠因系,在胡去薩的接管,再用 接拿受該集團卓越研究
研究的工作人员使超過
「巴西、法國及西德姆
巴斯夫的格拉索利
蹣邦做酒局
·快速挖掘系統
·百分之芬點七。 一份工業生產下降[」個方向,作十五度的一的斗式挖土器。 之點八。九月,頭部對兩個方向在何 立方米對五芳米的 深生產下沃百分,有五種尺寸,包括一種吊擇和容積由Ó・CH 游行荣超過一百個固家 表示,十月份工上用優質發製造的跟部一種捻肃工具,包把伸形,有工廠,生產的汽車造。
十月份工業西畫| 辦公室裝修如何省錢 研討會討論箇中要訣
「巴斯夫公司名列第二十 三家歡洲最大公司,股
奥查,以股市值計算
·根據金融時報上月一
一隈市逍路二十卷三千萬。
讓公司辦公室装修如何 (#8) 18 威士汀指南協助節省刻時間
(2) P
爲此發價上昇的主園。六
年率在批發水平上差案|季節性調整上升百分之 各點五,顧示通貨膨脹 美囧十月份批發價格經 勞工部表示,同一月份批發價格上昇百分之 本托貸很格上升,成較去年同期高百分之三 | 七日在東酒店舉行, | 內汽車生泰商推出新 十月份的指數爲百· 本及節省成本支出爲主 車輛之聚,汽車和型分之二百八十四點一, 題的研討會,十一月十 ,一年是百分之七點一。格下降百分之零點,能滅少三成半養到時間 百分之五钻七。一九八零點五九月份的倒 [共有三十多位室內設
|-同時又能提高工作效
瓜西子無台
口出年明
箱 萬十六
果厅大 裸左于外
銷大茄韓
港量將番
尚一月份消對品及能饭一务工都表示,十月,阿及大企業機構的行政 這中當競賽及青果合作|銷港在香港的
日產錄影機削價傾銷
美國勞工部公佈,一為百分之五黏七。 產品铖格均稍下降。: 份的增幅轉爲通年半 管理人員出席。
|部市场部經理纪要, 国威士汀公司医路系統五十四萬籍:
• 這項研酎金是由美|蔬菜剛出公金會展出口|品構成威脅,希望業者 社各生產出口三集箱,拓路活動,將對我國
業局;柿子
密切注意其動向。
豊發金邀集 林麻
HEVINCE K'L大概會! 杏果合作社產品商憺報導」,過去 根據農業局的一
產
轉
到值
商
(東京電)葉內人,葉八,較去年同期下降一間編組合飛統的製造商村七十一年外射妹子西,生鲜番茄,但最近林暨 佔去德市塲九成,故龍製出公會,農業,在国度較出發當用黃流
士表示,日本錄映揚製】百分之四點二。
法
令
巴黎
生原
就菇香
囌
惟
出進口日本電舸錄映機 以不公平價格出售的指| 午夜過後一 辦公室開阁指南」,內會中决定七十二年:[衰毒品商锆報導 電)星期一 | 小翔威士汀公司出版「劃。
·研酎古上下紀要士年外銷無子西瓜凾角計|簽委五百嚼鮮番茄的供 餓合約,正交運中。
往年日
滅的 的表價本
·酒萄葡國法
種相關 收豐大年今
情於農進出一粒
瑞
· 威士汀指南手册, 口
酒的人士都紛紛等待,爲客戶節省金錢。據悉 年無子西瓜生產期間,
一台辦公室儁格組合統一倍。
保外館數量似無多大。
年黃
··約翰尼斯堡消息的
今年來報高
一斤,比九月份五萬六千
育教濟經頁三第張七第日五初月十年戌壬夏
̇價費消洲星
點二降月上
大人清
只有香 作責港
年五月 干十百。
潔
,四月大比: 加于金年百份十九:
「九速的七 公
二九量干
| 策劃辦公室风格上所遇 :供时曾同時又介紹
之徭點二[博佐乘Ć在第戎與蛋站 响儁等知識。與會者
點為是一種界 長 美國商業樓宇等
需求經已開始轉慢
十月份午長率上升百 之間》出發的領兵大獠 獲了不得星
分之一钻一,九月份堆,擬離低第一,於星期,放式辦公室候根和縮短 「把新酒運至英國,瑞合深統,並透過安装示
已出現供過於求
商業權興建中高速六八〇萬吹
・ 十月份疗數下降主士、西德,瑞典,意大能,比較各種不同形式
|的間隔著統優點和缺點
,去年十月露一百二十
七點六。
裝嵌挖掘系款,定有依鐵供惠電力的間,已出現供過於求之現象之一;新住宅樓宇之魂 組合系统的配件包括預國新商業概字及店舖亦 比七月份幾乎增加三分 威士汀辦公室開格|在紐約發表報告稱,美。九月份出售之新楼宇 姫國漢華實業羨行 | 住宅樓宇署突然堀加
澳洲克恩莉諾思有隔板和普通間隔板、工。
築工程則比八月份增加。
七點。 去年九妤分爲一百五十,其他地區推崤它的產品 高效午5:
-新加坡九月份批發,限公司(KE NC 。 作枱面、文件、貯物 [份爲一百五十一點七,尋求代理商,在東南亞 舒適的環境下工作; 控制經濟不景之惡劣影一樓宇乃以拍賣形式出售 一百五十一點六,八月成壓土城。該公司希望,他到公司委員在這些工程雖有助於 四點六。九月份指數驚 就可以從斗式挖土機變,符合各種特殊工作的,舊店及商場等。四十七 九,八月份下降百分之一種系統只葆要幾秒鐘, 組合形形色色的工作間,紐約等正興亞商業樓宇,去年同期增加近百分之一 | 年長率下降百分之三點來,業務甚爲成功。體 間格組合無限量摧展 德、印第安納波利斯及 加百分之二十四,而 分之零點三,九月份的快速裝嵌挖掘系統以紅種圓柱可令辦公室的一新奧爾邁、丹佛、保爾一份之邀售量比八月份增一 的增幅經修訂下降至百 巴布亞新幾內亞各地捕 趾的連接柱連接起來,。此外,在黎地牙哥、跌,單戶新樓宇在九月 張分之零點零六,八月份口)在菲律賓、印尼、,間隔板用一種專利跤,高達六百八十萬瓜方呎 利率大幅下降及奥價下 價格指數,初步下降百 LES PTY LT姬、燈光系統及座搭怎 興建中之商業樓宇璇税;另外由於按揭貸 [... 威士汀辦公室間隔一,因爲對商業樓宇之間格。這是因爲 |廂,惟其作用不會長久,而且遠低於原來之價
位在三襻市一處,百分之十四。 推報告指出,許多
̇製造食品九月份批
育發價格仍集一百五十
種斗式挖土器及套土器業產品有限公司代理。 - 除了大小不同的各|組合系统在港由价和工|求已開始緩慢。
「於經濟困難,設法套说
·報告同時推出,脚一以免破竦。
1983
中學會考試題預習專欄
生
物
(九)
dried at 100°C
Parately until no
further change:in
weight. Describe and
explain what you
would find on comparing
the dry weiμlts of the two groups?
明德出版社梁永華 提供資料 (fjIT A was allowed to
BIOLOGY (9)
WW. Leung.
MILL & DALE PRESS LTD
Unit 3 Respiration
5.The following diagram shows the beginning of an exneriment to investigate the respiration of
germinating seede- Both retorts contained the same number of surface-sterilized: cress seeds,
Water
Foam chamber
Germinating
opress seeds
Cress seeds
Betirt
NaOH.
·∙solution
B.
After 36 hours, the following results were observed, A:The selution within
the retort sten
rese to and stopped at level P. The temperature of the water increased 1.c.
B:No change
(a)Explain the results
in A and B÷
(b)What is the purpose of setting up B?
(c)Explain why the
experiment “would be imperfect if the seeds had not been sterilized.
(d)Mould interference
"due to photocais.
take:
-seeds
gave.
out leaves during the
experiment? Give
reasous for your
ánswer.
(e)After the experiment,
seeds in A and B
were removed and aven
stand for another 24 hours, describe and explain what further changes, if any, you would expect to find in
(1)The water.
temperature and (2)The level of the
solution within the retort stem.
·The diagram below showg the apparatus used to demonstrate yeast respiration,
•Therms
222
Liquid paraffin
Yeast in
boiled
and cooled
Bicarbonate indication solution
glucose
salution
The bicarbonate:
indicator solution. changes colour in accordance with the carbon dioxide
concentration in the solution, as shown in the table below
(by volume)
less than 0.03%
0.03%
greater than 0.03%
Colour of the blearbonate
Carbon dioxide concentration
indicator solution
paa
orange
yellow
(a)(1)Prepare two controls
for this experiment,
(2)Why are the two
controls. necessaryt
(b)Why is a thermoflask
used for this
experiment ?
(c)Describe and explain:
any observable change a in thermometer and. bicarbonate indicator: after a few days.
(d)(1)Give an account of the part played by the yeast in the procesa.
(2)Write the equation
for this process.
(*)State three differences
between keröbic and anaerobic respiration,
Answers
3.(a)A:The germinating
seeds carried out ́ respiration in the retort. Since
oxygen was used up and carbon dioxide produced was absorbed by the: sodium hydroxide solution, the pressure in the retort decreased, This caused the solution to rise to and atop at level P. Heat was produced during the respiration of the germinating aeeds and" waa absorbed by water This caused the water temperature to rise, B:The dry Beeda
carried out little respiration so that no changes can be observed.
(b)B was used as a
control to compare with the results
in A.
(c)The reepiratory
activities of the micro-organisms on the „surface of the seeds would interfere with the experiment.
(1)No.
Since light was absent and leaves were white,
would not
(e)The dry
of
food
the seeds in A would be less than that in B. Tt was
because some storage was oxidized. to liberate energy for the germination. The weight was lost as carbon dioxide was released.
(f)(1)The water tempera-
turecontinued to.
rise since heat would be produced as the germinating seeds carried out anaerobic respire ations
(2)The solution
remained at position Tsince
no gas was
used and
dio be a
Wag
the sodium
by
hydroxide solution. There might be slight lowering. due to gas. expansion.
4.(a)(1)Control 11 yeus
suspended in water only. Centrol 2: only glucose solution without any yeast.
(2)Control 1 is used
show that the fermentation of yeast cells needs glucose an substrate.
Control 2 is used to show that
fermentation
cannot take place
ia the absence cof yeast cells.
(5The thermoflask ia
used to prevent heat loss from the apparatus.
(c)After a few days, the
.2. produces organic compounds.
produces simple inorganic substances, ie, water and carbon dioxide as the end: products.
Aerobic: reapiration
1. needs oxygenhove
3. produces larger amount of
energy.
Anaerobic respiratio
1. does not need oxygen
(either alcohol on lactie acid). as the end products
3. produces less amount of
energy.
物理
心九》
明德出版社盧雄園 提供資料 PHYSICS(9)
HK. Lo
(Mill & Dale Press Ltd.)
Sound and. Wave Motion.
temperature of the Exercise 5: Heat, Light, thermometer increases and the bicarbonate indicator turns yellow. This ahows that the
fermentation of the yeast cells releases energy (heat) and:
carbon dioxide.
(d)(1)The yeast cells.
produce enzymes to break down glucose to
release energy for its life activities.
(2)C6H120%
Glueone
2C2H5OH+2002
alcohol
energy
carbon dioxide
1. In an experiment to
de termine the specific latent heat of fusion of ice, the following experimental data are obtained;
2
Mass of copper calorime term0.06kg Mass of copper nalorimeter water
0,160kg
Mass of copper calorimeter . water
=0.1845kg
Initial temperature) of calorimeter and
water-35°C
Final temperature of:
mixture=13.8°C):
Specific heat capacity of water-4200Jkg":"K Specific heat capacity of copper-420Jkg = K Find the specific latent heat of fusion of ice according to the above data.
A string under
tension is observed te vibrate with a
frequency of, 60Hz in its fundamental note emitted when supports are 2m apart, The
mass of the string is
0.05kg= (i) Find the
velocity of the transverse wave propagating in the string.
(ii) Find the
tension in the string.
(iii) Tr: the velocity o果
sound in air is
-1
330mg what is the wavelength of the fundamental note heard by: ear?
3. How far must an: object
be placed from a lens of focal length 0.1m in order that the area
of image formed. hy the lens may be 16 times the area of the object?
In figure 1 two ship: A and B are 660m. apart. The line AB
is parallel to the rocky ahore CD and is:440m from it. A gun, ia fired on A and the noise is”. heard twice by.
obaervers on Ban
well as by observera
on A. If the velocity
of
3 Sound in air i出
find
.650m.
Pigure
(1) the time
won't
interval between twn noises heard: by an observer on A.*
(ii) the time interval
between the two noises heard by an óbserver or B.
th figure2, a ray of
light is incident on one side of
If the angle uprism.
incidence is 30°52. and the prism in 1.5. Trace the path of the ray through the prian.
Figure 2.
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