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【单选题】
国际管道运输线是指用于国际管道运输的地下管道线路,主要用于( )输送A.
能源
B.
煤炭
C.
铁矿石
D.
磷灰石
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【简答题】Parting line is the between cope and drag.
【单选题】With a large tow astern，there is immediate danger to the tug in the event of the ______．
A.
Tug losing power
B.
Tow line parting
C.
Bridle twisting
D.
Tow broaching
【单选题】You are handling a mooring line and are instructed to Check the line. What should you do?
A.
Ensure the bight is not fouled by taking up slack.
B.
Pay out the line smartly and keep it free for running.
C.
Secure the line by adding more turns.
D.
Surge the line so it maintains a strain without parting.
【单选题】The parting line or the parting surface is line or surface that ( ) the cope and drag.
A.
substrates
B.
separates
C.
states
D.
accelerates
【简答题】蚀孔孔径较( )。(填大或小)
【简答题】普通 V 带的标记由( )、( ) 和标准编号三部分组成。
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