单选题：During the SARS period,it is especially important to ventil

题目内容：

During the SARS period,it is especially important to ventilate the room. A．dust
B．clean
C．remove
D．air

参考答案：

答案解析：

54

54 A．staring at B．glancing at C．looking D．watching

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根据《安全生产事故报告和调查处理条例》(国务院令第493号)，关于该起事故的调查，下列说法正确的是（　　）。 A．由A厂所在地县级人民政府国资委组织调查 B．由

分类：综合类题型：单选题