更多"The sensing line for the low pressu"的相关试题:
[单项选择]The refrigeration system low pressure cutout switch is actuated by （）.
A. an electric system manager
B. a sensing bulb at the tail coil of the evaporator
C. pressure changes in the suction line
D. failure of the king solenoid valve
[单项选择]Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?（）
A. The generator and bus transfer section
B. The 450 volt, 60 cycle, 3 phase bus
C. The 120 volt, 3 phase, 60 cycle bus
D. The 24 volt DC bus
[单项选择]Which will cause the high pressure cutout to stop the compressor in a R-22 system?（）
A. Condenser leakage
B. A shortage of liquid refrigerant
C. Excessive frost on the evaporator
D. Not enough condenser cooling water
[单项选择]If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）
A. fuel pump should be removed and all connections blanked off
B. cylinder oil feed rate should be increased slightly above that used at normal sea speed
C. cylinder oil feed rate should be reduced
D. cylinder oil feed rate should be increased to the maximum flow capable of the metering pump
[单项选择]水平安定面操纵系统中，水平安定面超控电门（STABLILZER TRIMOVERRIDE SWITCH）是超控哪个部件（）
A. 水平安定面配平电门
B. 驾驶杆切断电门
C. 水平安定面配平限制电门
D. 水平安定面配平手轮
[单项选择]Company uses layer 3 switches in the Core of their network. Which method of Layer 3 switching uses a forwarding information base （FIB）？（）
A. Topology-based switching
B. Demand-based switching
C. Route caching
D. Flow-based switching
E. None of the other alternatives apply
[填空题]（）语句一般用做单一条件或分支数目较少的场合，如果超过3个以上分支的程序，可用多分支选择的switch语句。
[简答题]离线LOW-E与在线LOW-E的优缺点？
[单项选择]Compared to manila line，size for size，nylon line（）.
A. has less strength than manila line
B. has more strength than manila line
C. is equivalent to manila line
D. will rot quicker than manila line
[单项选择]low flow sensor位于（）
A. 主电子设备舱
B. 驾驶舱
C. 前电子设备舱
D. 空调舱
[简答题]中空LOW-E玻璃可否做弯钢？如果能够做有没有限制？双片夹胶玻璃可否做LOW-E？
[单项选择]The primary reason low pressure evaporators produce distillate more efficiently, and with less scale formation, than high pressure evaporators is （）.
A. evaporation is accomplished in a vacuum
B. due to the higher temperature of the incoming feed
C. due to the latent heat of evaporation principle
D. evaporation in a submerged medium produces more distillate
[单项选择]Low compression results from （）.
A. a worn cylinder
B. broken piston rings
C. either A or B
D. none of the above
[多项选择]POST-LINE重删与IN-LINE重删的主要区别是（）。
A. IN-LINE重删技术能够边接收数据边进行数据重删
B. POST-LINE重删技术先接收数据再进行数据重删
C. POST-LINE重删技术存储空间利用率低于IN-LINE重删技术
D. IN-LINE重删技术对备份设备性能的要求高于POST-LINE
E. POST-LINE重删技术存储空间利用率高于IN-LINE重删技术
[单项选择]Which of the following statements regarding low expansion foam and its application is INCORRECT?（）.
A. Foam should not be used on electrical fires
B. One kilo of low expansion foam solution produces much more foam
C. Foam is only efficient when it covers the top of burning combustibles
D. A stream of foam should be deflected off the deck in order to best agitate the fire
[单项选择]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.
A. the power stroke
B. the compression stroke
C. low load operation only
D. periods of standby
[单项选择]In an operating refrigeration system low on refrigerant, a liquid line sight glass will（）
A. be clear
B. be blue
C. be light green
D. show bubbles
