题目

下列说法中正确的是（） A . 功率大的机械做功多 B . 机械效率高的机械做功多 C . 功率大的机械效率高 D . 功率大的机械做功快 答案：DThe brave soldier would prefer to _____ rather than ______ and in the end the enemy had to kill him.A．dying, giving inB．die, to give inC．dying, to giving inD．die, give in