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单选题
解相关处理技术可对（）进行有效的抑制.①雨雪干扰②机内噪声干扰③海浪干扰④雷达同频异步干扰
A
①、②
B
②、③
C
③、④
D
①、④
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单选题一般港内船速要比海上船速低，其主要原因包括：（）A
港内航行阻力增大，为了减小主机扭矩而降低船速；B
港内航行阻力增大，为了增大主机扭矩而降低船速；C
港内航行阻力减小，为了减小主机扭矩而降低船速；D
港内航行阻力减小，为了增大主机扭矩而降低船速。
考题
单选题The cargo，when（），should be completely covered with plastic.A
stowB
stowingC
stowedD
be stowed
考题
单选题Which of the petroleum products listed has the lowest flash point?（）A
Hydraulic oilB
Lubricating oilC
Diesel oilD
Refrigeration oil
考题
单选题A flashing green light displayed at a single lock means that the lock is（）.A
ready for entranceB
ready for entrance，but gates cannot be closed completelyC
being made ready for entranceD
not ready for entrance
考题
单选题（）about 20 sq.m to be sand-blasted.A
The rusting areaB
The rusted areaC
The corroded areaD
The corrosive area
考题
单选题According to the regulations，what type of gauging is required for a cargo of butadiene? （）A
OpenB
RestrictedC
ClosedD
None
考题
单选题货物的净重量（Net_Weight，N．W．）一般系指（）A
总重量除去第一层包装的重量B
总重量除去所有包装的重量C
卸船重量（Discharged_Weight）D
装船重量（Loaded_Weight）
考题
单选题“中华人民共和国船舶交通管理系统安全监督管理规则”规定，船舶在VTS区域内发生交通事故、污染事故或其他紧急情况时，应通过规定手段（）。A
向VTS中心报告B
待事故原因查明后向VTS中心报告C
船长或船舶所有人认为适当时向VTS中心报告D
立即向VTS中心报告
考题
单选题The priority of EGC messages is classified by（）.A
distress, urgent and safetyB
safety and routineC
urgent, safety and routineD
distress, urgent, safety and routine
考题
单选题A storm is forecast for the area where your vessel is moored. For its safety you should put（）.A
more slack in the mooring linesB
a strain on the mooring linesC
chafing gear on the mooring linesD
grease on the mooring lines
考题
单选题同一台离心泵转速n改变范围不太大时（）。A
其工作流量Q、扬程H及轴功率P皆与n成正比地变化B
其相似工况流量Qc、扬程Hc、轴功率Pc与n成正比地变化C
Q、H、P分别与n、n2、n3成正比地变化D
Qc、Hc、Pc分别与n、n2、n3成正比地变化
考题
单选题在船底装有发射超声波的发射换能器A和接收超声波的接收换能器B，A与B之间的距离为S，称为基线。发射换能器A以间歇方式向水下发射（）A
音频声波连续波B
连续超声波C
频率超声波脉冲D
音频声波脉冲
考题
单选题Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）A
Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiationB
Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gasC
Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gasD
This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
考题
单选题AC-C20遥控系统中，从集控室转到驾驶台操作时，首先（），这将使集控室和驾驶台车钟上“Bridge” 按钮的LED闪光且使蜂鸣器响，然后在驾驶台按下“Bridge”按钮，两地的“Bridge”按钮的LED变为平光，且蜂鸣器停响。A
按下驾驶台车钟上的“Bridge”按钮B
按下驾驶台车钟上的“ECR”按钮C
按下集控室车钟上的“Bridge”按钮D
按下集控室车钟上的“ECR”按钮
考题
单选题Low pressure air is usually taken through （） or pressure regulators to a low pressure reservoir supplying a ring main through driers.A
globe valvesB
butterfly valvesC
gate valvesD
reducing valves
考题
单选题柴油机机型不同，气缸盖紧固螺母上紧到位的方法也不同，较常见的有：（） Ⅰ.用液压拉伸器根据压力数值上紧 Ⅱ.根据测量气缸盖紧固螺栓伸长量上紧 Ⅲ.根据测量气缸盖紧固螺栓的应力数值上紧 Ⅳ.采用扭力扳手根据扭矩数值上紧 Ⅴ.根据气缸盖紧固螺母的转动角度上紧A
Ⅰ+Ⅱ+ⅤB
Ⅱ+Ⅲ+ⅤC
Ⅰ+Ⅳ+ⅤD
Ⅱ+Ⅲ+Ⅳ
考题
问答题简述多式联运应具备的条件。
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