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判断题
往复泵中空气室的作用是排除系统中的空气。
A
对
B
错
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单选题In the ship construction portfolio,materials which do not conform to ASTM or ABS specifications must also include the().A
chemical and physical properties of the materialB
name of the alternative standard or specificationC
the ASTM or ABS specification the material approximatesD
manufacturer or origin of the material
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5个月/6个月C
6个月/12个月D
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货物装卸和吃水情况及港方要求B
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单选题What is the fundamental purpose for imposing radio silence? ()A
To ensure that interference to proprietary communications is minimizedB
To ensure that only voice communications can be effected on the distress frequency or channelC
To ensure that a distressed vessel will have a window twice each hour for transmitting routine messagesD
To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized
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单选题在水平方向上物理属性较均匀的大块空气称为气团,其物理属性主要指()。 Ⅰ.云系;Ⅱ.气温;Ⅲ.能见度;Ⅳ.湿度;Ⅴ.风;Ⅵ.稳定度。A
Ⅰ~ⅥB
Ⅰ,Ⅱ,Ⅳ~ⅥC
Ⅱ,Ⅳ~ⅥD
Ⅱ,Ⅳ,Ⅵ
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Ⅰ+ⅡC
Ⅱ+ⅢD
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Ⅱ~ⅣC
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单选题Under the provisions of applicable international conventions, ships entitled to fly the flag of a Party are subject, while in the port of a Party, to control by officers duly authorized by the Party Ships of non-parties or below convention size shall be given ().A
more favorable treatmentB
less favorable treatmentC
no more favorable treatmentD
the most favorable treatment
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push rodsB
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Ⅰ、Ⅱ、ⅢB
Ⅱ、Ⅲ、ⅣC
Ⅰ、Ⅱ、Ⅲ、ⅣD
Ⅰ、Ⅲ、Ⅳ
考题
单选题下列有关锋附近气温变化正确的说法是()。A
在锋附近气温连续变化B
在锋附近天气发生剧烈变化C
在锋附近天气变化很小D
在锋附近气压连续变化
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