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【单项选择题】

A horizontal the 450mm long and 25 mm wide cuts through the loadline disc.It is called the（）.

A、A.the deck like

B、B.plimssoll dise

C、C.plimssoll line

D、D.summer load line

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更多“A horizontal the 450mm long and 25 mm wide cuts through the loadline disc.It is called the（）.”相关的问题
第1题
[单选题] What describes a flood current（）.

A、Horizontal movement of the water toward the land after high tide  B、Horizontal movement of the water toward the land after low tide  C、Horizontal movement of the water away from the land following high tide  D、Horizontal movement of the water away from the land following low tide  

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第2题
[单选题] With a given load on the cargo hook，tension in a single span topping lift（）.

A、increases as the boom's angle to the horizontal increases  B、is at a maximum when the boom is at a 45° angle to the horizontal  C、increases as the boom's angle to the horizontal decreases  D、decreases as the boom's angle to the horizontal decreases  

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第3题
[单选题] The boom indicator tells the operator at what angle the boom is compared to the（）.

A、horizontal position of the boom  B、vertical position of the boom  C、horizontal position of the load being lifted  D、vertical position of the load being lifted  

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第4题
[单选题] A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.

A、the horizontal component of the permanent magnetism  B、deviation caused by the vessel's inclination from the vertical  C、induced magnetism in the horizontal soft iron  D、induced magnetism in the vertical soft iron  

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第5题
[单选题] Magnets are placed in horizontal trays in the compass binnacle to compensate for the（）.

A、induced magnetism in the vessel's horizontal soft iron  B、change in the magnetic field when the vessel inclines from vertical  C、permanent magnetism of the vessel  D、magnetic fields caused by electrical currents in the vicinity  

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第6题
[单选题] By day，the horizontal motion of a white flag，or arms extended horizontally，by a person on the beach indicates（）.

A、Haul away  B、Tail block is made fast  C、Negative  D、Affirmative  

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第7题
[单选题] Permanent magnetism is caused by（）.

A、operation of electrical equipment and generators on board ship  B、the earth's magnetic field affecting the ship's hard iron during construction  C、the horizontal component of the earth's magnetic field acting on the horizontal soft iron  D、the vertical component of the earth's magnetic field acting on the vertical soft iron  

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第8题
[单选题] With a given load on the cargo hook，the thrust on a cargo boom（）.

A、increases as the angle to the horizontal increases  B、increases as the angle to the horizontal decreases  C、is greatest at an angle of 45° and decreases as the boom is raised or lowered  D、is least at an angle of 45° and increases as the boom is raised or lowered  

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第9题
[单选题] The holding power of an anchor is the（）.

A、maximum sustained vertical load an anchor will resist before dragging  B、maximum sustained horizontal load an anchor will resist before dragging  C、maximum sustained vertical load an anchor will resist before the mooring line breaks  D、maximum sustained horizontal load an anchor will resist before the mooring line breaks  

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