梁板类构件，钢筋保护层厚度检验应各抽取构件数量的2%且不少于（）个构件进行检验。
A.2
B.5
C.7
D.10
参考答案：B
The weather that day may not be as good as expected, in ________ case we will have to put off the
event.[ ]
A. what
B. that
C. this
D. which
茵陈蒿的主治证是（）
A.肺痈
B.湿热黄疸
C.水饮心悸
D.肠痈
E.肺热咳嗽
