更多"0ne function of a hulwark is to（）."的相关试题:
[单项选择]0ne of the principal dangers inherent in liquified petroleum gas is（）.
A. as it warms up it becomes heavier than air
B. the way it reacts with sea water
C. the strong odor it produces
D. its low temperature causes frostbite or freezing
[单项选择]0ne of the limitations of foam as an extinguishing agent is that foam（）.
A. cannot be made with salt water
B. is heavierthan oil and sinks below its surface
C. is corrosive and to fire fighters
D. conducts electricity
[单项选择]0ne of your crew members falls overboard from the starboard side. You should immediateiy（）.
A. apply left rudder
B. throw the crew a life preserver
C. begin backing your engines
D. position your vessel to windward and begin recovery
[单项选择]在Function过程体中退出Function过程的语句是（）。
A. Exit Do
B. Exit For
C. Exit Sub
D. Exit Function
[单项选择]Function过程的定义（）
A. 一定要有形参
B. 一定要有End Function语句
C. 一定要有As<类型>语句
D. 一定要指明它的存储类别
[单项选择]The VPN termination function provides the ability to connect two networks together securely over the internet. Which of these is true of IP addressing with regard to VPN termination?（）
A. termination devices need routable addresses inside the VPN
B. termination devices need not routable addresses inside the VPN
C. IGP routing protocols will update their routing tables over anIPsec VPN
D. addressing designs need to allow for summarization
[单项选择]The function of synchronous compensating machine is to（）
A. improve power factor
B. reduce voltage oscillation
C. increase the insulation of circuits
D. eliminate regenerated magnetic fields
[单项选择]The function of the hydraulic telemotor transmitter used in an electro-hydraulic steering gear system is to （）.
A. transmit the rudder angle to the bridge indicator
B. prevent the control linkage from striking the stops when hard over
C. automatically purge all entrained air from the system
D. send hydraulic signals to the receiving unit
[单项选择]The function of diesel engine piston compression rings is to （）.
A. prevent piston side thrust
B. prevent engine friction losses
C. transmit heat from the piston to the cylinder liner
D. remove oil from the cylinder combustion space
[单项选择]What function is provided by the crankcase ventilation system on some diesel engines?（）
A. Increases the sludge forming tendency of lube oil
B. Prevents the accumulation of combustible gases
C. Improves lube oil cooling
D. Improves cold weather starting
[单项选择]One function provided by a hydraulic accumulator is to（）
A. provide an area where air can separate from the oil
B. provide an area to separate solid contaminants from the oil
C. act as an oil and water separator
D. absorb shocks occurring in the system
[单项选择]What is the function of thermostatic expansion valve in a compression refrigeration system?（）
A. nonexistent
B. for controlling pressure
C. for controlling superheat
D. for controlling the solenoid valve
[单项选择]Diesel engine valve springs function to （）
A. hold the valves open
B. keep the valves off their seats until the exhaust stroke is completed
C. close the valves
D. open inlet valves when the air injection cycle begins
[单项选择]The basic function of the centrifugal pump impeller is to （）.
A. directly increase the pressure of the liquid being pumped
B. directly increase the velocity of the liquid being pumped
C. convert the potential energy of the liquid to kinetic energy
D. separate air from the liquid being pumped
[单项选择]The function of the piston compression rings used in a diesel engine is to （）
A. seal the space between the piston and liner
B. transmit heat from the piston to the cylinder liner
C. reduce the amount of combustion gas blow-by
D. all of the above
[单项选择]What following is not among the function of SOLAS ships?（）
A. receive shore-to-ship distress alerting
B. transmit ship-to-shore distress alerting
C. receive message for public correspondence
D. transmit and receive locating signals
[单项选择]The function of a centrifugal pump double volute casing is to （）.
A. reduce radial thrust to the impeller
B. double the liquid velocity through the pump when compared to a single volute
C. reduce hydraulic end thrust
D. provide the effect of multi-staging
[单项选择]The main function of piston compression rings is to （）
A. prevent excessive cylinder liner wear
B. reduce friction losses in the engine
C. seal the space between the piston and the liner
D. limit upward flow of lube oil into the combustion space
[单项选择]What is the function of the command switchport trunk native vlan 999 on a switch?（）
A. It designates VLAN 999 for untagged traffic.
B. It blocks VLAN 999 traffic from passing on the trunk.
C. It creates a VLAN 999 interface.
D. It designates VLAN 999 as the default for all unkown tagged traffic.
