Changes in direction or speed of the main propulsion units s

题目
单选题
Changes in direction or speed of the main propulsion units shall be recorded, ()an Administration has determined that the size or characteristics of a particular ship make such recording impracticable.
A

in addition to

B

in addition that

C

except for

D

except where

参考答案和解析
正确答案: D
解析: 暂无解析
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相似问题和答案

第1题:

The officer in charge of the engineering watch shall ensure that at all times bridge orders relating to changes in ______of operation are immediately implemented(执行).

A.ahead or astern

B.fore or aft

C.up or down

D.speed or direction


正确答案:D

第2题:

单选题
One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is().
A

the extra weight required for the diesel reduction gearing

B

a minimum speed for the engines that limits the minimum speed of the vessel

C

the higher fuel consumption per SHP

D

the low efficiency of the system when a controllable pitch propeller is used


正确答案: C
解析: 暂无解析

第3题:

In an AC.synchronous motor electric propulsion plant,propeller speed is controlled by()

A.prime mover speed

B.number of energized main motor poles

C.propulsion generator field strength

D.electric coupling field strength


答案:C

第4题:

单选题
Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent ().
A

excessive crankcase pressure

B

excessive lube oil temperature

C

contamination of the lube oil by water

D

contamination of the cooling water by lube oil


正确答案: C
解析: 暂无解析

第5题:

单选题
A storm’s track is characterized by all of the following except().
A

the direction the storm has come from

B

the direction in which the storm is moving

C

the speed at which the storm is moving

D

the path taken by the storm


正确答案: A
解析: 暂无解析

第6题:

In the Northern Hemisphere a wind is said to veer when the wind ______.

A.changes direction clockwise, as from north to east, etc

B.changes direction counterclockwise, as from south to east, etc

C.changes direction violently and erratically

D.remains constant in direction and speed


正确答案:A
在北半球大风的风向会顺时针旋转,例如北到东。

第7题:

单选题
On a large low-speed main propulsion diesel engine, lower main bearing wear is usually measured by using a/an ()
A

dial indicator

B

outside caliper

C

bridge gauge

D

tram rod


正确答案: D
解析: 暂无解析

第8题:

In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the _____.

A.governor droop

B.speeder spring tension

C.fuel rack lag

D.load on the engine


正确答案:D

第9题:

单选题
While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?()
A

Manually trip the over-speed device

B

Interrupt the fuel flow to the engine

C

Disengage the safety interlock

D

Slide the camshaft to the neutral position


正确答案: B
解析: 暂无解析

第10题:

单选题
The opening of an exhaust valve on a modem, large, low-speed, main propulsion diesel engine may be actuated by ().
A

direct action of cam shaft

B

compressed air pressure

C

hydraulic “push rods”

D

direct action of the main piston moving down


正确答案: A
解析: 暂无解析

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