题目内容

危险化学品安全技术若加压过滤时能散发易燃、易爆、有害气体，则应采用( )，并应使用压缩空气或惰性气体保持压力。

A. 密闭过滤机
B. 离心过滤机
C. 带式真空过滤机
D. 转鼓式真空过滤机

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Mr. Green was driving with boxes of ice cream back to the storehouse when he (41) himself in a traffic jam(交能堵塞). Feeling hot (42) the sun, he took an ice-cream and ate it. Four (43) children in the car behind watched him eat it. He was (44) for them and gave them some ice cream, too. In minutes, he was surrounded by children. By the time traffic began to move ,he had gone through four cardboard boxes. (45) of explaining the situation to his boss,he decided to buy the ice-cream himself. When he (46) to the storehouse,however,he was (47) to the manager’s office and asked (48) he had given away the company stock. He thought that he would be punished. Instead,his boss smiled in a (49) way and said that it was the best public (50) the company had had in years,people had been phoning in to thank the company.

A. sweat
B. sweating
C. sweated

Why doesn’t she finish her homework

A. Because she doesn’t like it.
Because she knows the answer.
C. Because she doesn’t know how to do it.

what does the woman want

An orange.
B. An apple.
C. A cup of tea.

危险化学品安全技术凡确认为不能使用的爆炸性物品必须予以销毁，一般可采用的方法有( )。

A. 爆炸法、烧毁法、填埋法
B. 爆炸法、烧毁法、溶解法、化学分解法
C. 爆炸法、分解法、溶解法、填埋法
D. 爆炸法、烧毁法、化学分解法、填埋法