题目内容

English is the _________ language of more than seventy-five countries.

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Business need a common language to ______________ communication.

The boldfaced words below are from a lecture about English as a global language. Read each sentence. Write the letter of the word or phrase that is closest in meaning to the boldfaced word.

对于不同阻值的RX值，应选择不同量程，尽量使RX与RZ值（）。

R×1量程的RX值，可以从欧姆标度上直接读出，其它量程的标度读数应乘以相应的倍率才是RX的值（）

A. 对
B. 错