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问题 单项选择题

钢梁桥修理钩螺栓，钩螺栓钩头应位置正确，有（）钩头面积与钢梁钩紧，如遇到铆钉允许钩头偏斜。螺杆与钢梁翼缘间隙大于4mm者不超过5%。

A.1/3

B.2/3

C.1/4

D.2/4

答案

参考答案：B

填空题

根据括号内所给动词的适当形式填空，必要时可加助动词。

     In some foreign countries,some people 1            (do, not) like the number 13. They don't think 13 is a

lucky number.

     Michael 2            (have) the same idea Today is his twentieth birthday. He 3            (ask) some friends

to his birthday party. All of his friends 4             (arrive) at his home at seven. So he asks them 5           

(sit) around the dinner table. He begins to count the number of the people. Suddenly, he says Oh, there 6            (be) thirteen people here! Everyone is unhappy, but Mr Brown isn't, He says slowly, 7            

(do not) worry, my dear friends! We have fourteen people here because my wife Mrs Brown will 8            

(have) a baby in a few weeks. All of them become happy again.Congratulations! they 9            (say) to Mr

and Mrs Brown.Then they 10            (enjoy) the nice food and have a good time.

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单项选择题

社区护士指导慢性阻塞性肺气肿患者做腹式呼吸时。吸气与呼气时间之比为

A．1:1

B．1:1.5

C．1:2或1:3

D．2:1或3:1

E．1.5:1
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