1988-12-01 — Page 18

華僑日報 All

實質工資增長-

上幅 消幅

四期星

【底料賣這價管 巨

日一月二十(八八九一)年七十七國民華中(18)

來函請附 眞實姓名 地址電話 橏寫清楚 個人遭遇 社會問題 路見不平 歡迎投訴

讀者來函

談九巴申請加價事

行公衆的落格。

| 均加幅約爵百份之十九 堆九巴公司提出的加濕",色調「離和加以改善,但 九司向政府申誘加價,小 會得去年推幟村兩倍,批高素巿 新色輿論不断要求政 恐怕會引致一串惡性連鎖反應 十月一日,九巴公工資上开無論如何也不 的情况下,導致廣大阪豬的,多年来社会人叶 既要市民承租利潤須公開財政 不少招商是有目共

不合情理,

以提出大幅度的加質,經濟負担必然加重,這的做引,全部面股東得觀慧修改計劃 | 等,我們認為,九巴是不上巴士公司之加幅,一九巴每年蘭西斯), 點交,因此小里没有 許可利潤和改善服務聲似對資增加的幅度追體也把松而在報強「哥,由於

你就在她們改状况下一個四人工作小組會。

堆非僱

爲長體員

Al 粉引

各個以此是 【類在反加,次 在野

調引葉試動少

弄個食不带

會同狀司望 的不承乘方膑况巴如的從 對待只將政交是合拍,至息面的,士间 銀 何我 通僰理,就許下蘞→成公怅行而政

大司退貨

車 巴」

『此財上,生士是民求不多司建政伸 強 巴盛 基於

此全公,非况確性,大多市 一套們現粘号就下洋

↓ 〔五)玛谰鐵路的班次早期是谁照巴士 陳理了解一

的全力

月離收育。 坐扣籤,因沒有收弨系,打三日的

● 去估計,因其認爲本比巴士落載客量多關係 我亂了陣脚,而月又不能像地鐵般每次乘 會對居民造成驚嚇,故宫将较低些。 巴士要收群线被議貝所反對被迫統一地區收 这些院號是不規則時間發出的,故突然师起 ,安排班次比志士少及訂收费時因訂乘接駁,所以發出的壓响便會對居民有人影 ·

上學情形,造成乘客對輕粜排斥及不滿無 班車也不上車,出現大量人士湼到 八等车不耐荫及人想不若熙球如此困難,如 問籃在於——經輋行走初期二犬,乘客

原則性及確認性去經營林遊交通二······· 縠公司應盛活使用,除主要經營醫鯧外亦森 運作,有吗限性。故輕協專區的專利權、輕 能取代所有公共交通具的,輕鐵需要路 八一首先要定及遵從輕啟務是不

來張台及中型巴士,去彌補經激服務之K足。撈

別可開辦的路綫:由娛醤經門入游

月九十.

.單,故不會相差太遠。月票收延三十天, 故可謙定在某一段時間發車便可於某時,上到 方面少意外會有很大帮助。 相悄很多人都不滿,舉例「屯門道」收費悔 因加班天除,滿意於各认出到達日的地 客乘巴士時在繁忙時間,長會旗上京的, 快速使用路面,既保億行人、汽車及輕潮 輕鐵便提早三十分鐘出門口乘車,巴士雅 隆涖以減少交通燈位,合其他汽車及輕鐵更

·是一位經營的手法。要知道乘客上班或上孽 能造的,可減少乘客熊率的麻消。 * 已有她一翁的待間派,而乘客不會因今天要(二)在一些些忙路口改建行人天橋或 | 少班次,特别在行車初期,選稱做法强究不 康作總站。這辣路大部份都是現時彩鐵不 |事情活都會是較低的,然而,認爲車較大师战 他學友愛、仁愛分科診所,風玉花園、往 〔三〕加班次,当是最决定到的行動,

報日僑華

商谶闖港

日三廿月十年辰戊驚夏

年七十七國民華中

對輕鐵有許多建議

而出屯

加建天橋減少意外

月台的

,來回

元五角

市中心

往屯門

門碼頭

三元即

排陀購。

月台5 下正,蒸字裤逛時,再加上月台萏而洗下 是否亲令人不策劃買月票行分票機有更多人·的不設找贖發應有明確標注,可在該等機直 加上一卯棄一切的方蚴清点明。另外,在 月台进加歌去泭砂等類似防滑搭施,让夲

形象色得入民間,西輯私、交財會、屯元兩

「大」輕的交班處安全已遍受

·輕緻無肉,不箔事實如何。但經餓不安全的 十 區議會都表示失望或關注,調動專家生現場 ,錸遭除了二、三次外,大部份百任都與

除六十元即三十天。常熱打鐵公司可解釋持,可作變卡車行小,這是急不容稅的,從

出生,除將售票機融亂月台外,

增添班次以求疏導

不設找贖票機應有明確標誌 其

wwwwwwww.ccm

準備進行補教工作,

華僑文化

裝在其樂花面第一座的——「當有二部要告 都應盡可崖防止这些事件重演。至於近日來

補救」只小小改動。略加改安便會完工!? 1問題在於輕鐵是在一個基本完成的市跃,地的地名如紅學(四) 困難多得很。但,無論困難多少,有關方面,可改善的方法诗,多貼與該地區的人士交换

書,指題在於——所謂騎救工作,確賣是「 知去手如此美公氣調節。一 加設而非市鎭最初開拓時去郭浩,所以客綱 (七)祈望哪些專家在設計那些可行及

台灣的人也打貤兒,請記谜多利用 需安洲些車輛或行人費用某段、某些路面 其他輕繊的作品,必須在患前指示改器M絨 比如地鐵、火車股只在自己的路上行駛而無 ,必須沿綫管,若能沿綫載客,可減少 會嗎?政府拿起為行天橋嗎?會將無澍 容,此情蕊妮泡車泊着,只要家不可以爬頭 意見,打到該方法現受·大天

[六]可利用间椒的鐵们的甜沿途 播如设告下一悒话的名闋以協勘乘客。正因 屯門區議員楊美光啓(下)

(五)改善車箱內的國斯裡量,站在

H2

potassium hypochlorite

(cold, dilute)

ue metal

etc.

TBRARIES

Phosphorusti

21-512-5-2PC15

Phosphorustiv

(pale-yellow, streng

smell of 2)

3012 + 6K014 emme>3KC1 + KC10g +31420

[conc. het)

(^2 + Ca(OH)2(5)→→

iwet, hoti

potassium

chiorate

(colourless, no smell of Cla

bleaching powder

2

| 3.4 ly can displace Bry from bromides and ly from ind:des because Cipris

a strong oxidizing agent than Br. and Iz

2

Tetrachloromethane(CC1) 15 often

added in order to make the colour changes Tore vivid.

| (1) Ci2lg)+20r ̈(aq)-———6^2(aq)+201 ̈(aq)

1989 中學會考預習專欄

明德出版社 MILL & DALE PRESS

In economics, the demand for a good is the relationship between its price and the quaritity bought.

There are 6 factors affecting demand: 1. Price of the good

Kormally, wter: the price of the good decreases, people are willing and able to buy more. Conversely, when the price rises, people will buy less.

2. Price of the related food

If the two gouds are substitutes, a rise in the orice of one good will raise the demand for another. But if they are complements, the price of one good wil

the demand for another,

3. Consumers' income

If consumers' income increases, the consumers will usually demand more of a good.

Number of consumers

If there are more consumers, the demand for a good will increase.

5. Cansumers' taste

If the change in taste is in favour of a good, the demand for it will increase.

Consumers' expectation

The demand for a good will rise if consumers expect its price to rise. If the price is going to rise, it will save money by buyng the good Eimmediately.

DEMAND AND QUANTITY DEMANDER White demand' rofen te relationship between in v

juanes bought,

fers to

Statia

whole

particular

a particular price.

Price

Quantity

Sz

15

15

Table 10.1

Graphically, the demand for a good is illustrated by a demand curve while the quantity demanded is illustrated by a particular point of the demand curve, e.g. the point g of the demand curve ) in Fig.10.1 shows that at the price of $4 the quality demanded is 2.

共圖

$4

13

12

11

al

1

2

G

Fig. 10.1

a demand schedule shows the demand for a good which is formed of particular quantities. bought particular prices, 1.e.. the quantities demanded. Table 10.1 refers

A change in demand is illustrated by a shift of the demand curve. Wher demand decrepses, the demand curve shifts to the left. And when demand increases, the demand curve shifts to the right, erg. the shift: fron Dy to Dy in Fig. 10.2%

upward

$7

16

$5

53

3:

Q

2

品 ;

7 Q

|Fig.10.2

A change in demand is caused by a charge in the price of the related

Bonsunars income. consumers'

400€,

conswee

10.2

素 Consumers.

But movement.

if quantity demand increases, it will be a downward movement, e.g.the movement from to

in Fig. 10.3.

P

$7

46

$2

JFg. 10.3

2

3 4

5 7 0

A change in quantity demanded is caused by a change in the price of the good. Thus in fig. 10.3 when the price changes from $4 to $2, the quantity gemanded changes from 2 to 4.

tion. Thus in Fig.

A

of the good remains tor

the good charges

On the other hand, a change in quantity demanded is illustrated by

G a demarded decre

demang

3.1 Chionne reacts directly with many elements 打

chlorides. Heating is often required.

Nearly ali metals

Most non-metals

(except C, D,. N

012

→ Ciaredes

movement quancity

correspond

ar

THE LAW OF DEMAND

normal

is

downward sloping, i.e. negatively sloped, showing that the

ange quantity denanded' of a good tend to move in opposite directions.

In economics, the Law of Demand states that the lower the price of a good, the greater will be its quantity demanded.

3.3 Cl2

reacts with alkalis to give

chlorides

hypochlorite chlorate:

2KOH→→→KCJ + XC10 +

or

4趟深修李哲水彩展:美 八娶章畫展:太子打美畫家 葉民代書法展;藝術中心。 浙江街自石介绍:無古牌, 一、專業文物展

4.

五國陶藝展:馮平山怏物館。 中國東渡畫家與日本南畫展:大韓

Economics (10)

Alain Li

6.

DEMAND

「湖大(屯門仁愛廣場)月十一日星期日(環 日期點:十二日三日星嬔多利亞公園),十二

月十日星期六八迢遥寺,免費入塔。

樂壇三位新秀

担合 榮家,包括港樂駐回指輝葉詠詩, || 八望香港永樂手大拜冠軍触衪堂 明日 —⺼,三及四日常行的「古典 金貨車」音樂會,將自三位代阱音 《文化消息)香港曾遊樂園在

1989 中學會考預習專欄

Chemistry (10)

R. Chu

五德田 趙少昂、周公理合作

N.B. If a metal has more than one oxidation state, the chloride

in its highest oxidation state is usually chterned, e.g.

Examples:

明德出版社

MILL & DALE PRE

Unit b: Revision notes on the Halys and Halides, Chlorine and Chlorides.

1.

Some information of the Haloget

Element

Suring ka

Burning. My

Dutch marsl

1656-24

Observation

Continues to burn with a yellow flame, xj+1 giving off white clouds of Rack...

Cartinues to hurn brightly, giving orr No+C1 white clouds of Mylly.

Uns spontaneously with a green

(a)

Laboratory Preparation

A (except flucri corresponding hydrogen (Nax)。

Iodine

Caged by oxidation of the

or sodium halides

tron at

[red-heat

Phosphorus

@lum red-nut, giving oft light

Yellow Phosphorus burns Sponta

with an orange lame king off"

KONG PUBLIC

Al have 7 electrons in the outermet

(Thus, they have similar chemical pro

All are simple diatomic molecules.

Silvery dark-į brown liquid, grey solid, volatile

sublimes readily

as a white flare, giving off

Steamy fumes.

direct sunlight,

For fgnition

diffused sunlight

Smnati redu

ng

reaction

ite

Bromine

Fluorine

Name

新邨版

甬 灣

Reddish-

greenish-

yellow gas

(b)

Atomic

Structure

(c)

(d)

Appearance at

room temperature

Pale-yellow

gas

Molecular structure

Sulphur

Ones not burn in

(e)

Atomic (cr

molecular) size

(f) Melting points/

Add W

Br2(aq) <Light-

(Because of the increase in the intermolecular force)

e

+HCI

+50

an orange-red liquit which has a revolting sime!),

3.2 Cly reacts with water to give an acidic, green!sh-yellow solution, known as

chlorine water. Cig + H2O

HC!

+

HC10 hydrochloric Gypochlorous

acid

HC10 15 unstable and decomposed slowly under sunlight.

2HC10 2403 +

hen a coloured substance is put into HC10(aq), it is breached white.

HC?0(aq) + dye → Hi (aq) + (dyerh}

Cl2 is used for bleaching cotton, linen, etc.

colorless

{hus, Cly turns a wet litmus paper first red ard finally bleaches it white. 3.5 Reactions with some other compounds:

Compound

Observation

Equation

Anmoria

Ammonis burns spontaneously with green late in chiarings

Brut N, PAHING-

excess.

Hydrogen

Hydrocart. e.g. candi, turpentin

Yellow said 1 deposited, steamy fumes. (A traco wathe myt be present.) (1) A Jurning candle continues to burn with a small, res and sooty flame.govin'find carnon (2) Rod fast and black clouds o carbon are sees on dropping a glass

oaked with turpentine into a Des Jar C, 305.

C, turns it from bale-greul Tour to 126of Da)-1,(07-

-Br (og)

ED!

(Rec)

| (2) C12(g)421 ̄(39)-->12(zq}+20) ̃(aq)

Aed XC14,

H

(Yellow)

taq!

Ty(aq) (yet low)

+2/0014 Cvfoler

4. Some important uses of chlorine

(1) As 它

bleaching agent, bleaching cotton, linen, but not wool, silk or stray.

{2} As a germicide, for sterilizing drinking water and swimming pools, for killing cholera, typhoid and other germs:

(3) As disinfectant, insecticides (e.g.

DDT) or drycleaning liquid.

water

Reactivity (or

cxicizing power)

Reaction with hydrogen gas

Explosive

in dark

Explosive under sunlight

Yoderate on Slow, heating

reversible

{g)

(h)

(1)

Boiling points

Chorvation lonic equations

Halide

Ci

Misty fumes CHC1. acla

cropletsi.

nitrate

chaking sme

Redd:sh-Urof.

| vapour(Bry),

Br +H, SO-H3D tHer

2HBr+H

pungent small

Violet vapour

ly for fanc

I

Yellow

jesek-gray solids,

tasoluble

Categy smel)

CH2ST

2. Tests of Halides

silver

2.1 When

soiutian, acidified with dilute nitric acid,

is added to an aqueous solution of

a halide, a coloured precicipate would be obtained.

Ag*(aq) + X ̃(aq)→ AgX(s)

Colour of

praclitate

haiide ion

:Chloride (GY Brarice Brodide

Whits CAGCE: Palepoliow

(Ag@r)

Solubility Soluble es

In excess

2+

荔景臨屋超市幾度易手終付一炬

臨時屋區超級市場

商人歎息生意難做

報表示,初步計算,根失合共五十多萬港元,雖然有保

AS (H

being formed

Turning grey No Channe

3.

一個居住在第三

2.2 When conc. H250, is added to a solid halide, hydrogen halide(HX) is obtained. However, HBr and Hi

are further oxidized by conc. H2SO

anc iy respectively. relative ense of of hydrogen halices is

to give Bra (N.B.

Oxidation

The

Chemical Properties of Chlorine gas Chlorine is very reactive, just next to the most reactive element fluorine.

Chlorine has a great affinity for hydrogen atoms or electrons, sc, it is a strong oxicising agent (or an electron acceptor).

Thus, irall its reactions, its oxidation number decreases from 0 to −i.

Tront!)

2

solution

*Cabo to pelo (due to Fu**fagli

Sulonur

to absorva la changes.

dinxide

Suluh te

solution

(4) in

2fe7* (aq)+2U] [al:

manufacture of drugs anaesthetics (e.g. chloroform).

and

(5) In

+a+2017 Faci

making synthetic rubber. plastics (e.g. PVC).

In all the above reactions Cl acts as an exidising agent by removing either

(6) In manufacture of HCT and hence

Pydrochloric acid.

-atoms or electrons (as indicated in the change of oxidation numbers) from the (7) In preparing chlorides by direct chenica: species.

combination.

Effect of

sunlight

Turing purple-grey

+ 2e ---→→ 201

2

0

-.1

HF<HCT <HACH)、

九年,期間做生意不好 ,也停止探險一段時期 的铝线市蕩在該處已有一 已封閉。 的居民罵你表示生,還超市陳姓東主講邈撥失情况。(左)超市後

荔景絕隘火,越市付一炬,右]

只可窩超級市

,越過四至五個老闆 +

橋,更甚麼在山下,即荔景邨街市及觀兵团的友聯超級市 的商店不,所以没有害。再者,他又表示,很多居民放工 所以很少人在装處購物,又因食品不足,但不比那 加上該處的货品十分 ,而且滿面並不美觀,

lti-

Comments

Approved members can add comments, bookmarks, and private notes.

No comments yet.

Private Research Note

Private notes are available after approval.