[名词解释] pure sensory stroke
[单选题]A．t least ___ cylinders in four--stroke engine will be configured to ensure that the engine can started with the crankshaft at whatever position.A．6B．2C．12D．8
[单选题]The pump has a constant stroke and the amount of fuel delivered is regulated by rotating （） which has a specially arranged helical groove cut into it.A . the pump cylinderB . the pump camC . the pump plungerD . the pump miler
[单选题]During the suction stroke, the piston is moving （）.A . inwardsB . outwardsC . downwardsD . upward
[单选题]What are the symptoms of sun stroke?（）A . Temperature falls below normal，pulse is rapid and feeble，skin is cold and clammyB . Temperature is high，pulse is strong and rapid，skin is hot and dryC . Temperature is high，pulse is slow and feeble，skin is cl
[单选题]B．esides Stroke Mandeville, surely the games for the disabled were once held inA．New York.B．London.C．Rome.D．Los Angeles.
[单选题]If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because theA．cylinder compression pressure may not be high enoughB．cylinder compression temperature may be too highC．fuel oil injection press
[名词解释] 热射病(heat stroke)
[单选题]The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the （）.A . control rackB . delivery valveC . governor speedD . plunger crossbar