浮艇式消防泵的出水口直径为（）mm。
A.50.0
B.60.0
C.65.0
D.70.0
参考答案：C
I will ask her for the book now, for she ____ plenty of time to read since I lent it to her.
A．has
B．has had
C．had had
D．was having
截止频率
