当附着式脚手架预计停用超过（）收停用前应采取加固措施。
A.半个月
B.二个月
C.三个月
D.一个月
参考答案：D
上承板梁支座位置不正时，应检查支座上下翼缘角钢是否有裂纹。
This is a very interesting book.I'll buy it,_____ . [ ]
A. how much may it cost
B. no matter how it may cost
C. however much it may cost
D. how may it cost
