根据对话内容用合适单词填空。

A: Who is (1) ________(2) ________today?

B: (3) ________am.

A: (4) ________we all here?

B: No.

A: (5) ________isn't at school today?

B: Zhang Qiang.

A: (6) ________is he?

B: I(7) ________know. But I think he's

(8) ________ (9)________. He looks (10) ________his father.

实际正点开出的客运班车次数与应开出班车次数之比，称为（）。

A．客车实发率

B．客运正运率

C．客运正班率

D．发车正点率