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单选题
在航次租船合同下,若船长宣载的货物不够船装时,则船长().
A
有权要求承租人继续供货
B
无权再要求承租人供货
C
经船舶所有人同意,有权要求承租人供货
D
以上都不正确
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考题
单选题由于中压电力系统的电压高,中压电缆的敷设好坏会对设备、系统的正常工作以及人身的安全有直接的影响,因此敷设时要特别注意。下列有关中压电力系统电缆敷设叙述不正确的是()。A
中压电缆应与低压电缆尽可能远离敷设,并且中压电缆应敷设在不易受到机械损伤的地方B
中压电缆不可敷设在起居处所内C
中压电缆应适当地标以“高压”警告牌D
管子或者管道或者电缆槽的内壁应光滑,且其端部应形成或加衬套,以防止将中压电缆损伤
考题
单选题根据我国船员条例,下列有关我国海员证的陈述有误的是()。A
船员在境内遗失海员证的,应当向海事管理机构申请补发B
船员在境外遗失海员证的,应当向我国驻外使馆、领馆申请补发C
船员在境内海员证被盗的,应当向其当时所在港口的海事管理机构申请补发D
海员证的有效期不超过5年。
考题
单选题在三极管基本放大电路中,测试发现静态工作点已经设置在放大区中央部分,但同时出现截止和饱和失真。这说明()。A
测试错误B
输入的信号幅度过大C
为消除失真,应增大三极管基极静态输入电流D
为消除失真,应减小三极管基极静态输入电流
考题
单选题The INMARSAT system has five major components, they are:()A
Space Segment, NCC, RCC, SES, and CESB
Space Segment, a satellite system, C system, NCC and NCSC
Space Segment, NCC, NCS, CES and SESD
A system, C system, satellite system, earth stations and NCS
考题
单选题The sequence of fuel injection into cylinders is determined by ().A
the steeringB
the driven gearC
the turning gearD
the timing gear
考题
单选题What safety precautions should be observed by the crew while working around machinery in an engine room?()A
They should wear safety shoesB
They should wear ear protectionC
They should not wear jewelryD
All of the above
考题
单选题根据我国《海商法》规定,当发生共同海损后,有关方当事人约定了不同于我国《海商法》的理算规则,是().A
对于共同海损的理算应使用约定的理算规则B
对于共同海损的理算应使用我国《海商法》的规定C
对于共同海损的理算应使用中国海事仲裁委员会的规定D
以上说法均不正确
考题
单选题Positive displacement, helical gear pumps are well suited for pumping oil because ()A
stuffing boxes eliminate the leakage problems usually associated with other gear pumpsB
it is not necessary to closely maintain design clearances with this pumpC
they are essentially self-priming and produce a high suction liftD
these pumps are designed with extreme tooth angled
考题
单选题Increasing the speed of a centrifugal pump will result in an increase in its capacity Another means of increasing the capacity of a centrifugal pump is to increase the ().A
diameter of the discharge piping, with all other factors remaining the sameB
diameter of the suction piping, with all other factors remaining the sameC
width of the impeller onlyD
diameter of the impeller
考题
单选题It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are () before the pump driving motor can be started.A
in the pert positionB
in the starboard positionC
in the neutral positionD
to be dismantled
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