（） your prices are right, you will find a

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问题单项选择题

（） your prices are right, you will find a ready market for the products.

A. Should

B. To provide

C. Provided

D. Provide

答案

参考答案：C

选择题

His aunt’s letters ________ memories of those beautiful days when they used to live together in his hometown.

A．call at

B．call for

C．call on

D．call up

问答题计算题

一台星形接法的三相电动电动机，接到相电压为220V的三相电源上，其每相电流是8安，电动机的功率因数为0.72，试求电动机的有功功率。