海船船员考试
单选题If the high-pressure switch on the compressor opens and stops the compressor a possible cause could be:（）A too much cooling water going through the condenserB not enough refrigerant in the systemC a leak in the evaporator coilsD no enough cooling water
题目
too much cooling water going through the condenser
not enough refrigerant in the system
a leak in the evaporator coils
no enough cooling water going through the condenser
参考答案和解析
相似问题和答案
第1题：
When adding oil to a refrigeration system, precautions must be taken to ensure that
A.the compressor suction pressure is not too high
B.all air is purged from the pump and charging fittings
C.the high pressure cutout switch is held open to prevent accidental starting
D.the condenser is completely shutdown first
第2题：
if it is cold ,you will find the air conditioner compressor stop automatically ,do you know the reasons ?
第3题：
In face of the current stock market, most stock-holders_____.
［A］ stop injecting more money into the stock market
［B］ react angrily to the devaluing stock
［C］ switch their money around in the market
［D］ turn a deaf ear to the warning
本题考虑事实细节题。第四段第一句提到，许多投资者（savers）对拥有太多公司股票的危险视而不见。［D］项是该句的改写，其中turn a deaf ear对应原文中的shut their eyes to，the warning对应the dangers。
第三段作者通过休伊特（Hewitt）咨询公司的职员的介绍说明，投资者仍在不断地投钱（keeping their contributions up），但是他们不太愿意把资金转投其他地方了（less inclined to switch their money around）。由此排除［A］和［C］项。第三段末句“投资者普遍感到吃惊（overwhelmed）”指的就是持股者对股市不景气的反应。因此［B］项与事实不符。
第4题：
cutout
pressure controller
controller switch
cutout switch
第5题：
控制时间限设定值菜单（）功能是当在一定时间内压缩机的启动次数达到该设定值时，压缩机将在一个小时内无法启动。
- A、STOP LAG COMPRESSOR TIMER
- B、FORCE START LAG COMPRESSOR TIMER
- C、HOT STARTS/HR COUNTER
- D、START LAG COMPRESSOR TIMER
正确答案:C
第6题：
If a refrigeration system were short of refrigerant, the condition would result in
A.continuous running of the compressor
B.high suction pressure
C.high discharge pressure
D.short cycling of the compressor on the water failure switch
第7题：
The sensing line for the low pressure cutout switch to a refrigeration system is located ______.
A.in the chill box(冰箱)
B.before the receiver
C.on the suction side of the compressor
D.on the discharge side of the compressor
第8题：
a. on
b. off
c. up
第9题：
Condenser leakage
A shortage of liquid refrigerant
Excessive frost on the evaporator
Not enough condenser cooling water
第10题：
injection
penetration
atomization
compression