海船船员考试

单选题（） unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker.A The cable lifterB The hoisting motorC The topping wireD The life-raft

题目
单选题
（） unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker.
A

The cable lifter

B

The hoisting motor

C

The topping wire

D

The life-raft

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：

In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should ______．

A.Maximize your deck load

B.Distribute lumber so that those stowing most compactly per unit of weight are in the upper holds

C.Place the heaviest woods in the lower holds

D.Keep the vessel's frame spaces free from lumber


正确答案：C

第2题：

CDMA for cellular systems can be described as follows.As with FDMA，each cell is allocated a frequency（ ），which is split into two parts,half for reverse（mobile unit to base station）and half for（ ）（base station to mobile unit）.For full-duplex（ ）.a mobile unit uses both reverse and forwardchannels.Transmission is in the form of direct-sequence spread（ ）,which uses a chipping code to increase the data rate of the transmission,resulting inan increased signal bandwidth.Multiple access is provided by assigning（本题）chipping codes to multiple users,so that the receiver can recover the transmission of an individual unit from multiple transmissions.

A.concurrent
B.orthogonal
C.higher
D.lower

答案：B
解析：

第3题：

Which of the following actions are stated in the correct order prior to loading or discharging cargo on a Ro-Ro vessel?

A.Lower the stern ramp，raise/open the stern door，turn on ventilation for cargo holds

B.Turn on ventilation for cargo holds，raise/open the stern door，lower the stern ramp

C.Turn on ventilation for cargo holds，lower the stern ramp，raise/open the stern door

D.Raise/open the stern door，lower the stern ramp，turn on ventilation for cargo holds


正确答案：A

第4题：

Why would you make a non-backbone area a stub or not-so-stubby area？（）

  • A、 to aggregate routes learned from the ABR
  • B、 to lower the cost of routes advertised by the ABR
  • C、 to connect a non-contiguous area to the backbone
  • D、 to decrease the size of the link-state database in that area

正确答案:D

第5题：

The music was so loud that she had to raise her voice to make herself（）

  • A、hear   
  • B、heard   
  • C、to hear   
  • D、hearing

正确答案:B

第6题：

CDMA for cellular systems can be described as follows.As with FDMA，each cell is allocated a frequency（ ），which is split into two parts,half for reverse（mobile unit to base station）and half for（ ）（base station to mobile unit）.For full-duplex（ ）.a mobile unit uses both reverse and forwardchannels.Transmission is in the form of direct-sequence spread（本题）,which uses a chipping code to increase the data rate of the transmission,resulting inan increased signal bandwidth.Multiple access is provided by assigning（ ）chipping codes to multiple users,so that the receiver can recover the transmission of an individual unit from multiple transmissions.

A.structure
B.spectrum
C.stream
D.strategy

答案：B
解析：
见下题

第7题：

The music was so loud that she had to raise her voice to make herself（）

Ahear   

Bheard   

Cto hear   

Dhearing


B
略

第8题：

A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?

A.Move the quadrantal spheres closer to the compass

B.Raise the heeling magnet if the red end is up

C.Remove some of the Flinders bar

D.Raise or lower the athwartship magnets


正确答案：D

第9题：

When installing cables， which of the following is the BEST way of identifying the individual cables？（）

  • A、A cable chart mounted in the cabinet
  • B、A label at the tip of the cable
  • C、A label within six inches at each end of the cable
  • D、A penciled notation on the panel cover

正确答案:C

第10题：

Which two statements are true about broadband cable （HFC） systems？（）

  • A、Cable modems only operate at Layer 1 of the OSI model.
  • B、Cable modems operate at Layers 1 and 2 of the OSI model.
  • C、Cable modems operate at Layers 1， 2， and 3 of the OSI model.
  • D、A function of the cable modem termination system （CMTS） is to convert the modulated signal from the cable modem into a digital signal.
  • E、A function of the cable modem termination system is to convert the digital data stream from the end user host into a modulated RF signal for transmission onto the cable system.

正确答案:B,D

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