初二信生物/化学测验一
Quiz
•
Chemistry, Biology
•
7th Grade
•
Practice Problem
•
Hard
GHEE LOW
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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
在大气循环中,大气水主要来自
河流
冰川
植物的蒸腾作用
海洋
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
关于纯水的性质,正确的是
I 纯水无色、无气味、无味道
II 高山上,水的沸点为1000C
III 水中溶有食盐时,凝固点会降低
I, II
II,III
I, III
I, II, III
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
清晨树叶上的露珠总是近似球形,这是何种作用的结果?
毛细作用
表面张力
蒸腾作用
重力作用
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者说明了液体的毛细现象?
毛巾吸水
水黾在水上行走
用注射器将药物吸入
量筒内水的页面是弯的
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
电解水时,若在负极观察到5cm3的气体,则正极的气体体积是_____cm3
2.5
5
7.5
10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
高山积雪合并循环中的水,不能通过以下哪个途径变成气态进入大气层?
升华
凝华
融化成液态水后蒸发
融化成液态水进入海洋后蒸发
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列各项中,属于水中杂质的是
I 水中的微生物 II 泥沙 III可溶性的盐 IV 溶于水中的氧气
I,II,III
II,III,IV
I, II, IV
I, II, III, IV
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