A、Were there loss of energy by friction
B、Since there be loss of energy by friction
C、Were there no loss of energy by friction
D、Should be no loss of energy by friction
更多“（）, the motion would continue indefinitely once it had started.”相关的问题
A、reciprocating motion of exhaust valves B、rotary motion of the camshaft C、reciprocating motion of the piston D、developed differential
A、in motion, providing a null input B、not in motion, thus providing a null input C、in motion, providing an input to place the main pump on maximum stroke D、in motion, providing an input to place the main pump at null stroke
A、motion of the Earth in its orbit B、rotation of the Earth on its axis C、the body's orbital motion during the time required for its light to reach the Earth D、a false horizon
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、their free-floating design B、their relatively small size C、the reciprocating motion of the piston D、their position in the lubrication system
A、The number of collision domains would decrease. B、The number of collision domains would increase. C、The number of broadcast domains would remain the same. D、The number of collision domains would remain the same. E、The number of broadcast domains would increase.
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
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