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【简答题】

干船坞主要由()、()等组成。

题目标签:组成干船坞船坞
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参考答案:
参考解析:
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刷刷题刷刷变学霸
举一反三

【单选题】船舶在船坞修理时会同厂方做好()的记录。

A.
钻孔测厚记录
B.
舵叶测厚及密性试验
C.
海底阀的修理
D.
以上都是

【单选题】To swim across the English Channel takes at least nine hours. It’s a hard work and it makes you short of breath. To fly over the Channel takes only twenty minutes, but it’s an expensive way to travel....

A.
not more expensive to be built than a bridge
B.
not more expensive to be built than a rail
C.
. cheaper to be built than a rail
D.
not cheaper to be built than a bridge

【多选题】下列属于浮船坞下水方式特点的是

A.
作业平稳安全
B.
起重能力受限
C.
造价高
D.
下水作业灵活