（）, the motion would continue indefinitely once it had started.<br>A:Were there loss of energy by friction<br>B:Since there be loss of energy by friction<br>C:Were there no loss of energy by friction<br>D:Should be no loss of energy by friction

（）, the motion would continue indefinitely once it had started.
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

出自：海船船员证

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