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问题 单项选择题

In foreign trade business, the trade terms CFR is often used, CFR is the abbreviation for

A．cost, insurance and freight
B．commercial invoice
C．cost and freight
D．consular invoice

答案

参考答案：C

单项选择题

Questions 16 to 20 are based on the following talk.

A. They get sudden attacks of sleep any time any place.
B. They are mostly students enrolled in 8 A.M. classes.
C. They are not easily cured if narcolepsy is diagnosed.
D. They often sit at a table and their faces fall into a soup.
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判断题

同样的污染、受潮；爬电距离相同，直径大的绝缘子污闪电压低些。
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