下列有关仪器用途说法不恰当的是 [ ] A．温度计代替玻璃棒_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

下列有关仪器用途说法不恰当的是 [ ]

A．温度计代替玻璃棒用于搅拌

B．烧杯用于较多量试剂的反应容器

C．试管用于装配简易气体发生器

D．胶头滴管用于吸取或滴加少量液体

答案

答案：A

题目分析:

选项A．用温度计代替玻璃棒用于搅拌，易打破温度计，故A不恰当；

选项B．烧杯的容积较大，可用于较多量试剂的反应容器，故B恰当；

选项C．试管可以作为反应容器，用于装配简易气体发生器，故C恰当；

选项D．常用胶头滴管吸取或滴加少量液体，故D恰当。

故选:A.

选择题

反应2A(g)+B(g) 2C(g)；△H >0。下列反应条件有利于生成C的是[ ]

A．低温、低压

B．低温、高压

C．高温、高压

D．高温、低压

完形填空

Mrs. Green, including her husband and three children, lived in a city,   41_was very near the countryside. She worked  42 a teacher and gave music lessons at a school. Of course she was fond of. 43__. Mrs. Green had a good voice and she 44 her classes exciting. But she had a   45 point. Some of her notes (音调) were so high that they sounded like a door which needed   46 . In order to improve her notes, she took   47 chance that she could find to practise.
As her house was not big, she couldn't practise 48__ in it. So she usually left home, walking and singing 49 the country road. She practised her high notes 50 walking. However, each time she heard a person or a car   51 along the road, she 52 singing. She did not want her high notes to be  53 , for she was shy.
One afternoon a fast open car came up to her so  54   and so fast that she didn't 55 it until the car was only a few meters. She was practising some of her 56 and most difficult notes at that time. As the car passed by, she saw a  57 expression come over the driver's face. He stopped suddenly to 58 all the tires (轮胎) carefully.
Mrs. Green felt it shy to tell the driver what the   59 he had heard really was. The driver found 60 wrong, got back into the car and drove off.

B．disappearing