The rotary motion of a diesel engine crankshaft is obtained from the up and down motion of the piston via the ().
A、camshaft
B、reduction gears
C、rocker arm
D、connecting or piston rod
A、camshaft
B、reduction gears
C、rocker arm
D、connecting or piston rod
A、reciprocating motion of exhaust valves B、rotary motion of the camshaft C、reciprocating motion of the piston D、developed differential
A、reciprocating at the piston pin, rotary at the crank pin B、reciprocating at the crank pin, rotary at the piston pin C、straight reciprocation D、straight rotation
A、rotary;reciprocating B、up and down;fore and aft C、fore and aft;up and down D、up and down;rotary
A、rotary;reciprocating B、up and down;fore and aft C、fore and aft;up and down D、up and down;rotary
A、The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump B、Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight C、Rotary pumps occupy only one-half the space of reciprocating pumps D、Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump
A、pump must always be primed B、volute must impart a radial and rotary motion of the water suction side C、connection must guide the liquid to the lantern rings D、stuffing box should not be allowed any water leakage
A、vertical motion of white flags B、vertical motion of a white light or flare C、firing of a green star signal D、None of the above