循环水泵主要向()提供冷却水。
A、凝汽器;
B、发电机冷却器;
C、冷油器;
D、给泵空冷却器。
参考答案:A
John likes playing soccer very much and he _____ about one hour playing it every day.
A.spent
B.wil spend
C.has spent
D.spends
现金统计是商业银行根据中央银行统一规定的项目归属指标,对通过银行的一切()进行的业务统计。