负载是取用电能的装置,是将电能转化为其它形式的()。
A、电能
B、热能
C、能量
D、电压
参考答案:C
We decided ______ at home. It was raining heavily. [ ]
A. stay
B. stayed
C. to stay
D. staying
产量监控系统中的毛煤指()。