正确答案: B

bed-plate

题目：The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the _____. This has the advantage of saving weight.

解析：B

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举一反三的答案和解析：

[单选题]任何船上使用救生衣的型式不得多于：

二种

[单选题]心脏骤停的抢救用药可用( )。

肾上腺素

[单选题]胸椎共有______块。

12

[单选题]海上求生者出现“过冷现象”时,人体最容易受到伤害的器官和部位是:

脑和心脏

[单选题]经血液途径传播的疾病有______。

乙型肝炎