题目内容

_________________ are fast and long waves generated by seismic events such as underwater fault movement (错层运动).

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The wave base is equal to ____________ the wavelength measured from still water level.

A. 1/5
B. 1/6
C. 1/7
D. 1/4
E. 1/3
F. 1/2

The _________________ is the distance between repeating units of a wave pattern.

A. wave height
B. wave length
C. period
D. frequency

按病因学分类，临床最常见的肺炎是

A. 细菌性肺炎
B. 病毒性肺炎
C. 支原体肺炎
D. 真菌性肺炎
E. 衣原体肺炎

治疗肺炎球菌肺炎，停用抗生素的指征是

A. 体温降至正常后3天
B. 体温降至正常后1周
C. 体温降至正常后2周
D. 症状、体征完全消失
E. X线显示炎症阴影完全消失