题目内容

根据《驾驶、轮机联系制度》的规定,船舶如因()须短时间抛锚时,值班驾驶员应将情况及时通知值班轮机员。 Ⅰ.等引航员; Ⅱ.候潮; Ⅲ.等泊,

A. Ⅰ~Ⅲ
B. Ⅱ、Ⅲ
C. Ⅰ、Ⅲ
D. Ⅰ、Ⅱ

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弹性可弯尖轨,它借助于尖轨的()实现尖轨的摆动,它能使尖轨跟端与导曲线的钢轨刚性联接,因而增强了跟端接头的稳定性,并简化了尖轨跟端的联接设备。

When the Captain of the Port or Officer in Charge,Marine Inspection issues an order of suspension to the operator of a vessel concerning oil transfer operations,it().

A. is always effective immediately
B. includes a statement of each condition requiring corrective action
C. must be in writing before it takes effect
D. All of the above

什么是机械加工工艺过程?它由哪些部分组成?

一般易燃易爆或有毒介质应选用()式安全阀。

A. 封闭式
B. 开启式
C. 微开

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