海船船员考试

单选题In order to reduce the accumulation of static electricity while loading petroleum products, you should（）.A start to load at maximum pressureB start to load slowlyC increase the air flow into the tankD use the overall method of loading only

题目
单选题
In order to reduce the accumulation of static electricity while loading petroleum products, you should（）.
A

start to load at maximum pressure

B

start to load slowly

C

increase the air flow into the tank

D

use the overall method of loading only

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相似问题和答案

第1题：

在SQL语句中，与表达式“仓库号NOT IN(“wh1”，“wh2”)”功能相同的表达式是

A．仓库号=“wh1”AND仓库号：“wh2”

B．仓库号!=“wh1”OR仓库号：=“wh2”

C．仓库号＜＞“wh1”OR仓库号!=“wh2”

D．仓库号!=“wh1”AND仓库号!=“wh2”


正确答案：D
解析：题干中给出的表达式：“仓库号NOT IN(“wh1”，“wh2”)”表示仓库号不是“wh1”并且不是“wh2”。符号“!=”表示的是不等于，因此正确答案为选项D。选项A表示仓库号等于“wh1”并且等于“wh2”，选项B表示仓库号不等于“wh1”或者等于“wh2”。选项C表示仓库号不等于“wh1”或者不等于“wh2”。因此选项 D为正确答案。

第2题：

Which three technologies are used to reduce chromatic dispersion accumulation in fiber－optic transmission systems? ()(Choose three.)

A. PIN photodiodes

B. zero-chirped lasers

C. Erbium-doped fiber amplifiers

D. dispersion compensating fiber

E. dispersion compensating Bragg grating


参考答案：B, D, E

第3题：

In order to achieve greater dehumidification with an air conditioning system, you should ____.Ⅰ.reduce the cooling coil Ⅱ.temperature increase the re-heater temperature

A.Ⅰonly

B.Ⅱonly

C.BothⅠandⅡ

D.NeitherⅠnorⅡ


正确答案：C

第4题：

Static electricity may be built up by the ______．

A.Flow of petroleum through pipes

B.Spraying or splashing of petroleum

C.Settling of solids or water in petroleum

D.All of the above


正确答案：D

第5题：

Which of the listed functions is the purpose of a gas scrubber in an inert gas generation system ________．

A.Cools the inert gas

B.Maintains the oxygen content at 5% by volume

C.Drains off static electricity in the inert gas

D.Maintains the water seal on the gas main


正确答案：A

第6题：

在SQL语句中，与表达式“仓库号NOT IN（"whl ","wh2")”功能相同的表达式是A）仓库号="wh1"AND仓库号="wh2"B）仓库号!="whl" OR仓库号="wh2"C) 仓库号<>"wh 1" OR仓库号！="wh2"D）仓库号!="whl" AND仓库号!= "wh2"


正确答案：D
题千中给出的表达式：“仓库号 NOT IN("wh1""wh2")”表示仓库号不是"wh1"并且不是"wh2"。符号“！=”表示的是，不等于，因此正确答案为选项D。选项A表仓库号等于"whl"并且等于"wh2"，选项B表示仓库号不等于"whl"或者等于"wh2"。选项C表示仓库号不等于"whl"或者不等于"wh2"。因此选项D为正确答案。

第7题：

In network that support VLSM, which network mask should be used for point－to－point WAN links in order to reduce waste of IP addresses?()

A./24

B./30

C./27

D./26

E./32


参考答案：B

第8题：

Some in the market now want government _____ in order to reduce costs.

A regulation ;

B regulate ;

C regular


参考答案：A

第9题：

Which product is most likely to accumulate static electricity ________．

A.Crude oil

B.Hard asphalt

C.Lubricating oil

D.Residual fuel oil


正确答案：C

第10题：

In order to reduce your wake in a narrow channel you should ______.

A.apply enough rudder to counter the effect of the current

B.change your course to a zigzag course

C.reduce your speed

D.shift the weight to the stern


正确答案：C
在狭水道中为了减少你船的伴流你应减速。

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