什么是液化石油气?其主要成份是什么?

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问题:

什么是液化石油气?其主要成份是什么?

考点:消防员理论知识高级消防员理论知识高级消防员理论知识题库
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根据短文内容及首字母提示, 完成下面短文,每空一词。

     Jim was a country boy. He was on his (1) w_____ to New York to see his grandma. As his parents were

very (2) b_____, he had to go there by himself. This was his first trip by plane. He found (3) e_____ new and

interesting. Soon it was the middle of the night. But Jim couldn't (4) s_____. He wanted a drink very much.

He saw some people went to the back of the (5) p_____ and got drinks from a girl there. But he didn't have

much (6) m_____ with him. He tried to sleep, but he just couldn't. At last he went to the girl with a (7) d_____

in his hand. "Miss," he said, "Could I have a drink?" "Sure," said the girl with a (8) s_____. She gave him a

drink, but she didn't take his money." You have paid for the (9) t_____. It means you have paid for the (10)

f_____ and drinks on the plane."

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所谓“寒从中生”病机,主要是指

A.寒邪伤人,影响脏腑功能

B.寒邪直中脾胃,伤及阳气

C.阳气虚衰,温煦气化功能减退

D.恣食生冷,内脏受寒

E.寒邪从肌表而入,渐侵脏腑

题型:问答题 简答题

紫外成像检测时,在安全距离允许范围内,在图像内容完整情况下,尽量靠近被测设备,使被测设备电晕放电在视场范围内最大化,记录此时紫外成像仪与电晕放电部位距离,紫外检测电晕放电量的结果与检测距离呈()关系,在测量后需要进行校正。

A.递增

B.递减

C.指数递增

D.指数衰减

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下列操作正确的有()。

A、夹角过大时不吊

B、光线不明时不准起吊作业

C、吊钩未对准货物重心时不吊

D、货物重量不明不吊

E、拔桩

题型:问答题 简答题

投影平行面是指平行于一个投影面的平面,这种平面自然()于另外两个投影面。

A、平行

B、正平

C、垂直

D、侧平

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