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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 沿海航海技术 > 船舶设备名称

单项选择题

An LWT anchor often has difficulty tripping in（）.

A.sand
B.soft soil
C.stiff clay
D.heterogeneous soil

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单项选择题
An integral part of a blowout preventer that serves as the closing element on an open hole，and whose ends do not fit around the drill pipe but seal against each other and shut off the space below completely is the（）.

A.shear ram
B.blind ram
C.pipe ram
D.annular ram
单项选择题
An example of a modern anchor which has a stock is a(n)（）.

A.articulated anchor
B.Flipper Delta anchor
C.Baldt anchor
D.Danforth anchor
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An example of a messenger is a（）.

A.fairlead
B.heaving line
C.stay
D.warp
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