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问题 单项选择题

《环境空气质量标准》中，根据数据统计的有效性规定，为获得一小时平均值，每小时至少有（）分钟的采样时间。

A.15

B.20

C.30

D.45

答案

参考答案：D

单项选择题 A1型题

按规定依法取得医师资格，但未经注册取得执业证书者（）

A.不得从事医师执业活动

B.可以从事医师执业活动

C.可以从事预防医疗业务

D.可以从事保健医疗业务

E.可以在医疗机构从事医疗业务
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单项选择题

Questions 24-30


·Look at the questions for this part.
·You will hear a passage about "Marriage Customs in the U.S. ". You will listen to it twice.
·For questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.

Which of the following statements is NOT true

A．The man gives the girl a diamond ring once the couple has decided to get married.

B．The wedding ring is worn on the third finger of the left hand.

C．At the beginning of the reception, the bride throws the bunch of flowers to the unmarried women.
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