A、stop valves
B、pressure relief valves
C、balance valves
D、regulating speed valves
更多“Overload protection on hydraulic system is provided by the use of （）.”相关的问题
A、time-delay protection B、short-circuit protection C、short duration surge protection D、sustained overload protection
A、a magnetic operating coil B、normally open line contacts C、thermal-overload protection D、a momentary-contact start button
A、With switches B、With a governor on the engine C、With fuses or circuit breakers D、By using heavy wire
A、prevent main circuit overload B、protect the circuit breaker blowout coil C、prevent alternator motorization D、prevent low voltage tripout
A、(config) ip nat pool isp-net 1.2.4.2 netmask 255.255.255.0 overload B、(config-if) ip nat outside overload C、(config) ip nat inside source list 1 interface ethernet1 overload D、(config-if) ip nat inside overload
A、overspeed；overload B、overload；overspeed C、over torque；overspeed D、low mechanical efficiency；overload
A、overload condition of 5 % will trip the motor off the line immediately B、overload condition will be indicated visually in the machinery space C、motor running indicator will begin to flash "on" and "off" in response to the sustained overload condition D、standby steering pump will start automatically and come on the line
A、overload B、the odds of the load C、the default of parts D、overload and the odds of the load
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