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學童巴士服務計劃春雲再展
夏巴汽車公司 正作積極籌備
夏
則上已批准該項計劃之申請 已籌備凡十八閱月 又據政府發言人表示 政府原 該公司主持人夏巴氏證實此消息 並謂對是項計劃
例子,該公司卽爲夏巴灣車公司。. 夏巴汽本公司主持人E玲(R.E.HARPER )作日下午榜受本報記者詢問時 據悉:本港一家大樓湾之滨商汽京公司,係策對在於洪設立基崴巴十服務之主幹
紅海英偉士近照
民調位。現前,但業奉告。 個月之
現供
加參美利士博漢維譚
議會育教較比際國
加參邀癀氏謹、開召學大州加由議會該
况情育教察考地各國美問訪將後會
者亦頍衆60
加問英文中學校長,廣大 軍校第四分校軨別班本雅教育事之官 監督證無減韓士剃育茶主任,淡入慶宮業,提供唐息至多 由主 席此項國際比獻教育 粲省立金山中學校長德氏對外 州大學於文學院長,,及近,又大方案推 ,定日門前途客得料
會後廣義、學者爾滋 學得文學士、碩士及在雜誌、親 會
亦頗熱心,年來 绣之學者,有林肯,翌年麤長燕城中央 本珠顾謝前往出 九三六年返國,任慶文章 該會,亞洲及東南亞石之國校任教。在加州大事。除此 教育聋盡」,廣孝世史丹佛大學,樹代社會 界各地教育學者出席 加州大學,晚間則在墓,符號 州大學將在本月下旬學致務主任。一九三清心理 召開一「際比較 七年羮梁浩,初入車,就兩 神凱榮緻辦[:中山大學高中;用中 波音博士等學位。一次有關教育广
提臂心氏牧,此
·州 美
一
嫽附中校長,其後升 組杳典教育基
八,由際
貓大文家,激
全學商來於
合校樂科,
退。我那任
九新、於之
豬
,除六香官能无
附:
中
對於當局日抵酶在木形改立學站巴士服務計到,政府過常人的日笞得記者绝: 鹽,商官,不過,新神父及該教育官那係伙計圖之門人士,二人只協助及促遄為現對 雖然夏巴氏作日未曾演露設計創䏲,何朝論父過去對此項計劉之有關透露,
!
加
, 除州席上描之古酒 沙鄉林肯本文中學,今日開放
香港
山旁系陔地救實現素,為期禎二個多月, 主席及市委黄帝|將該校是坐基安
大學興書 等,研究當地之高等中文 及中經教育发展 校外之臣華醒目,該镐特於今
近日府
三個月,大約五六月開始帼熙卷。
了只具樓梯响,不見有人來。證最近整項計處之實現可能性復告潑加,令開心
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Answers to axeroise 101
Illustrate with a labelled diagram the structure of the thorax of a mammal in relating to the respiration of air.
What
are the differences between inspired and expired airr Try ww describe as far as you can the differences of inspiration and Lexpiration.
In the thoracic cavity of a manual there are left and right lungs which are in turn contained within two airtight compartments, called pleurae.. Forming a pleural cavity.
Each of the right and left lungs fills its cavity, right and
Left side, almost completely. When the thoracic cavity is increased in -volume by muscular action, the outer pleura tends to pull away from the Inner pleura- and so to create a vacuum in the pleural cavity. The air, gan stream into the lungs through the trachea and the mouth or nose "because of the difference in atmospheric pressure between the pleural cavity and the external environment. (1.8, when the lungs exband the axternal atmospheric pressure is greater than that of pleural cavity, 80 air rushes in). when the thorax relaxes and collapses, the volume of air in the lungs inside the pleural cavity mostly is axpelled out through the trachea, By the repetition of this inspiration and expiration a supply of fresh air to the lungs is maintained.
·ways; 1
The thoraeic cavity is increased or decreased in volume In Wo
During the ihreease in volume of the thorax, the air fills up 1
the lungs due to:
4. By contraction of the muscles of the diaphragm which causes it to flatten.
so pressing the stomach and liver further down into the abdomen.
2. By contraction of the inspiratory intercostal musclee pulling the rios, which pivot at the vertebrae upward and outward in 'man (but downward and forward in the rabbit).
During the decrease in volume of the thorax, the air is mostly
axpelled out dua tot."
1. Relaxation of the inspiratory intercostal musoles, which allows the ribs and sternum to fall under gravity and reduse the volume of the thorax..
Relaxation of the diaphragm muscles while those of the abdominal wall
are contracting and pushing the stomach and liver up into the diaphragm, which arches into the thorax so reducing its volume.
3. The elasticity of the lungs which causes them to expel air.
Here is a diagrammatic section of the thoragic cavity of a
namma 2 = .....
Bronchus
Outer pleura Inner pence
Pleural cavity
·Tracheav
.Rib.
Lung
-Heart
Pericardium
-Diaphragin
.固件傳声文速度
2.在進行中之火車上,所闻火車记西声之頻率 停車時记西声之頻率。
3.拍是由
產生,每秒之拍数等於
4 AB两専合以速度V6及话向同一方向前 進,若带头之A平聪闻B車號角声之頻率 比其实际頻率為高時, 11 Va
5声波能傳播至阻碍物後方之現象,称為
6.地面附近之声波,若其傳播方向而風之方! 何相同時,則声波多向折射,若在逆風 時則多向 折射。
当声波在依其傳播方向而分成两层温度不 同之空气中進行時,必何
折射..
8 在夜時,声波何折射,白畫則向一 :折射。
9在槐音樂時憑以分别各档亦同車品 1 的是音樂的
织闲营阶各音之頻率具比例為
官所長各昔之頻率,且比例為
11. 同長度之闻常闭营,闻官基音的频率
為闭官基音频率的一倍,
汲功進行之方何与介质振动之方向相同者, 称為您
例
方向与价值娠 例如
若波初進行之
斯称為,
The differences between the inspired and expired are expressed;
{es follows &
#strogan
Goy gan
| Carbon diosa də
'kater vapour
Other rare gåsat
Shapired air.
(incoming air]
(breathed-in air)
(ánhaled air)
竇
学
20-223
0.032.
1%
1銻(approximately)
@col.
dry,
Less bacteria.“
"Expirea siz
(outdoring air)
(breathed-out air)
T2%
15-17#
43.
63
1% (approximately)
March
moist...
moro bacteria.
For further study or she inspiration and expiration of air-wa” nave to deal with the exchange of gansa. through the blood streami
The blood-¿onveyed to the lungs direct from the heart through the pulmonary artery is in fact venous blood, with a concentration of oxygen in 11 which is lower than that in the air-sacs of the lungs,
Oxygen therefore diffuses through the walls of alveoli into the capillaries and entera into loose combination with the pigment hemoglobin of the red blood cells. This accounts for the drop in percentage in oxygen during Inhaled and exhaled air.
50
The re-oxygenated €1000 is returned to the 181t ventricle or tam heart and pumped out through the aorta to distributs through the body. tiaduca generally, By respiration energy is consumed, the oxygen ia used up and carbon dioxide is released In the living body tissues, the blood surrenders oxygen wherever the concentration of the latter-10 low and carbon dioxide is taken into the plasma by solution or formation of salta wherever its concentration is high. When the blood reachan the. Jokerlunga after its next passage through the heart, the concentration of
carbon dioxide, in it is higher than in the alveoli, arid some of the gam diffuses out of the blood into the air sac. This accounts for the higher zuarbon dioxide 'content of the exhaled air.
why do living organisms require food? Try to give a brief account or, the nutrition of tapeworm and a dodder,
Deng, Laving organisms require food on account of the production oft energy, support for growth, replacement of used tissue, reproduction
annanoe of good h
Energy is obtained by enzymatзg oreakdown and oxidation or -complex molecules, and the necessary oxygen is supplied by cellular norespiration. The energy is used for building up new form and structure,
for movement, for the mintenance of body temperature, in poikilothermio animals. --Plant- nead Zoss food than animals because of their comparable: weight, its`utilization of the energy from sunlight and of its "power of: photosynthesis. By oxidation of fats and carbohydrates energy is set { "fras, Growth, replacement and reproduction involve the manufacture of
protoplasm. from proteins and water. This is the transformation of simple inorganic, substance into complex organioʻmatter, derived from rood, Even various salta such as calcium and iron, ama alno derived from wal the food wie these vital processes,
t Kazan Vitamins are also needed by the healthy living organisów or curarna
must be taken in food, f
bates The adult tadeworm is an internal" parasite perzsitia on men and Jeuner animals. It stays in the mucora bembrane of the host and absorba> ́ite disso】red food over ita whole body surface. It has no digestive system of its own because it is bathed in the digeated food in the hosta is reproduces its szge by utilizing its absorbed food from its host..
Dodder is a plant papasite parasitic on flowering planta, : There are many species of dodders, invading specifïa spasies of flowering planta, The seed germinates in the soil and the young seedlings obtains "inutrients" from the seed, The mature plant parasite fixed to the host
plant by ita haustoria, Is itself has no fumotional leaves of roots, **The naustoria of the parasite can develop its phloem to elaborate food dvérom the host"plant" and its own xylanh tó, absorb water and dissolved salts
from ita noat plant, so as to make its oka new tissues./
4
13. 某人,在路牙魄闻-单之號角声迎面而來
之速度為
14.暑音以在一可調即官長之刃官口振动時,其連
续两次共振吁之官長差50厘米,若其時声速 為:340米/秒,則此書义之频率為
甲乙丙三人分别在三间不同的地点申指正 北方看見闪電後4.17抄了聪闻雷声乙方同 時在正西方看見闪宽於3.2秒後才聽闻雷声 内在氟乙同一幢摩天大廈之頂楼,楼高148米 於見到闪電後 3.36秒便想闻雷声,若当時 之温度為26.4°C.问(0)甲乙相距若干來? 山,闪霞處离地面高若干,
提示:现将其位置用下面暮表明之便很容
计算
之頻率及其波長。(C)若有另一汽車以互时
英里之速度与之相对而行,則在此車上聽前 申號角频率為若干?兩車相遇時聽 闻前車之频率若中?ve,而車遇後相背而馳,则
前車號角之频率2若干?(5)若有每秒20 呎之風而最初之汽車同向而吹,則上述各询 題又名如何?
提根郡靭な屋可得下到各式
(1)声源移动,聽者不动:fo=fs
$60
V - Vs
(只)戆者移动声源不动:fo=f还
(3)串源与聽者均移动Jo=f
T-Ta T-R
(4).介篊.声源及聽者均移动 fo=fsV+D-De 式中f,及品分别代表声源频率及聽者所闻频节 .Po,区区分别代表者,声源及介之速度。
為当時之声速。各速度若与声波方向相同者 取正值,相反者取負值..
久,有一鋼线,懸以一鉛錘,此時鋼线之基本没 頻率為500週每秒。今将铅錢全部浸入水中, 求此時鋼线之基本波頻率(鉛比重為 11:47.
-Emaraisse för"this weckt
a kilustrace, az en diagram, the mechanisms involved in hearing and the
"Gonditions "Chat may lead to impairments of hearing, "And" what"Kida"are,
used to overgone the neäring deficiency? „^.
3, (Thismine); B2 (riboriavino);
“2. Try to evaluate the vitamins Al Ey
"Nicotinio. Aula (Ninoin); B¿1 B12) C1-01 61 and Kundar, the following
minine headinga Badala ya mapapadima
Mɛ Olamical' nature: n. sourasija, tunatione; d. signa or ita deficiency), Say... dai le requirements anazik, effect of its overdonego
小青一汽車以每小時36英里之速度前進,若汽車號 角声之頻率為每秒400週波此時之空氣為静止 者求的站在汽車前面所聽闻號角声之息
張力為F'時,“细线基本波濒草為f 則
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