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问题 单项选择题

建筑工程施工安全技术

龙门架的物料升降机架体的主要构件有立柱、天梁、上料吊篮、导轨及( )。

A．底座

B．底盘

C．坐基

D．千斤顶

答案

参考答案：B

解析：龙门架的物料升降机架体的主要构件有立柱、天梁、上料吊篮、导轨及底盘。

单项选择题

I was reading Shirley Hazzard’s novel The Transit of Venus. Though I (51) her other books, I had always resisted this one. It (52) me as too pure somehow, too heroic, larger or finer than life and therefore unreal. But now I read it with an almost (53) pleasure. There were sentences that (54) of gratification to my eyes and (55) the hairs on the nape of my neck. I was in a Boston hospital, propped tip in bed with a feeding tube in my arm after (56) surgery for cancer. It was

(57) double room and my roommate, who (58) when he spoke because he had both a broken chin and a drug habit was spraying the air for the fourth or fifth time that day with (59) had a television set and a radio going (60) . The diagnosis of my case was ambiguous. When I asked the doctor the usual question-How much time have I got—he hesitated before answering. "I would say," he said, "that you have in the neighborhood of years.\

53().

A.indescribable 

B.describable 

C.detectable 

D.indetectable
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判断题

振动式密度计法可在线连续测量。
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