A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently chargedIt is generally located in the().
A. high pressure liquid line
B. low pressure liquid line
C. high pressure vapor line
D. low pressure vapor line
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柴油机冷却系统的冷却水,合理的流动路线和调节方法应该是冷却水自上而下流动,调节进口阀开度大小控制温度。
A. 正确
B. 错误
If the master has acted unreasonably,e.g. knowing of the danger in the port has still proceeded to enter it,and danger results,the Charterer will().
A. be liable
B. not be liable
C. be paid
D. not be paid
开式海水系统要求进入冷却器的海水温度不低于25℃。
A. 正确
B. 错误
设置在军民合用机场的台站的台址,应当征得()同意。
A. 当地无线电管理委员会和地方政府
B. 地区管理局
C. 国务院民用航空主管部门
D. 军方