更多"Limit switches are used on which da"的相关试题:
[单项选择]Limit switches on gravity davits should be tested by（）.
A. the engineers，from a panel in the engine room
B. shutting off the current to the winch
C. pushing the switch lever arm while the winch is running
D. All of the above
[单项选择]Limit switches（）.
A. control the descent rate of a lifeboat
B. control the ascent rate of a lifeboat
C. cut off power to the winch when the lifeboat nears the final stowed position
D. cut off power to the winch when the lifeboat reaches the davit bumpers
[多项选择]With regard to bridges and switches, which of the following statements are true?（）
A. Switches are primarily software based while bridges are hardware based.
B. Both bridges and switches forward Layer 2 broadcasts.
C. Bridges are frequently faster than switches.
D. Switches typically have a higher number of ports than bridges.
E. Bridges define broadcast domain while switches define collision domains.
F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.
[单项选择]Pedestal cranes have limit switches to restrict movement of which function（s）（）.
A. Hoist upper & lower limits
B. Luff travel limits
C. Rider block hoist upper & lower limits
D. All of the above
[单项选择]The limit switches on a ships survival-craft winch system（）.
A. stop the winch just before the craft reaches the final stowage position
B. limit the amount of cable on the drum
C. limit the ascent rate
D. stop the winch in case the craft weighs too much
[单项选择]Freon 12 which is used to produce intense cold is normally a （） when at atmospheric pressure and temperature.
A. liquid
B. gas
C. solid
D. water only
[单项选择]A low pressure annular preventer which is used to direct flow of kick fluids away from the rig floor is called a （）.
A. dump valve
B. deflector
C. separator
D. diverter
[单项选择]To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus?（）
A. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 link
B. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link
C. to two core switches from redundant distribution switches connected with a Layer 2 link
D. to two core switches from redundant distribution switches connected with a Layer 3 link
E. to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO
[单项选择]which command is used to enable CHAP authentication whit PAP as the fallback method on a serial interface?（）
A. (config-if)#authentication ppp chap fallback ppp
B. (config-if)#authentication ppp chap pap
C. (config-if)#ppp authentication chap pap
D. (config-if)#ppp authentication chap fallback ppp
[单项选择]The device used to limit engine torque at various engine speeds is called a （）
A. speed limiting governor
B. variable speed governor
C. constant speed governor
D. load limiting governor
[单项选择]A separate piston cooling system is used to limit any contamination （） piston cooling glands（） the piston cooling system only.
A. between；to
B. either；or
C. from；to
D. neither；nor
[单项选择]Which command is used to configure a default route?（）
A. ip route 172.16.1.0 255.255.255.0 0.0.0.0
B. ip route 172.16.1.0 255.255.255.0 172.16.2.1
C. ip route 0.0.0.0 255.255.255.0 172.16.2.1
D. ip route 0.0.0.0 0.0.0.0 172.16.2.1
[单项选择]Which command is used to load a configuration from a TFTP server and merge the configuration into RAM？（）
A. copy running-config: TFTP:
B. copy TFTP: running-config
C. copy TFTP: startup-config
D. copy startup-config: TFTP:
[单项选择]Which command is used to copy the configuration from RAM into NVRAM?（）
A. copy running-config startup-config
B. copy startup-config: running-config
C. copy running config startup config
D. copy startup config running config
E. write terminal
[单项选择]Which command is used to display the collection of OSPF link states?（）
A. show ip ospf lsa database
B. show ip ospf link-state
C. show ip ospf neighbors
D. show ip ospf database
[单项选择]The type of extinguisher which should be used for an electricity fire is（）.
A. foam or soda acid
B. dry chemical or foam
C. carbon dioxide or dry chemical
D. carbon dioxide or foam
