更多"If you are given the job of adding "的相关试题:
[单项选择]Given that you have a class B IP address network range, which of the subnet masks below will allow for 100 subnets with 500 usable host addresses per subnet?（）
A. 255.255.0.0
B. 255.255.224.0
C. 255.255.254.0
D. 255.255.255.0
E. 255.255.255.224
[单项选择]The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? （）
A. A downbound vessel
B. An upbound vessel
C. Current reaction when the lock chamber is being emptied
D. Current reaction when the lock chamber is being filled
[单项选择]（）in the open air has given you a good color.
A. Work
B. Worked
C. Working
D. To be working
[单项选择]The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
A. specific gravity
B. viscosity
C. S E number
D. hydrolytic stability
[单项选择]Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）
A. permanent loss of pump suction
B. worn shaft seals
C. high level in the oil sump
D. low motor RPM
[单项选择]When air becomes trapped in the hydraulic fluid of a steering system, the （）.
A. rudder will respond sluggishly
B. hydraulic rams will over-speed
C. sight glass will show bubbles
D. ram relief valves will lift
[单项选择]The amount of fluid delivered by a positive displacement pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the driving rotor
C. either A or B
D. None of the above is tree
[单项选择]The amount of fluid delivered by a reciprocating pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the piston
C. either A or B
D. None of the above is tree
[单项选择]The amount of fluid delivered by a centrifugal pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is tree
[单项选择]In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.
A. penetrations
B. plating
C. framing
D. brackets
[单项选择]Air trapped in the hydraulic fluid of a steering system should be indicated by （）.
A. the pump over-speeding
B. an improper rudder response
C. bubbles in the sight glass
D. ram relief valves lifting
[单项选择]The amount of fluid delivered by a helical pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is tree
[单项选择]The amount of fluid delivered by a screw pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is tree
[单项选择]A fluid coil will （）large quantities of heat when it changes state from a liquid to a vapor.
A. release
B. absorb
C. develop
D. regenerate
[单项选择]The amount of fluid delivered by a gear pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is true
[单项选择]The movement of heat within a fluid, caused by the application of thermal energy, is called （）.
A. radiation
B. conduction
C. convection
D. condo-radiation
