采用扁钢作防雷装置的引下线，其截面应不小于（）mm²。
A.24
B.48
C.75
D.100
参考答案：D
______ wants to stay in a hotel has to pay by themselves.
A．Anyone
B．The one
C．Whoever
D．No matter who
像4.80、5.12、78.43…这样的数，叫做小数．______．
