起钻时溢流的显示？
参考答案：
⑴灌入井内的钻井液体积小于起出钻柱的体积；
⑵停止起钻导管钻井液外溢。
⑶钻杆内溢泥浆。
— Can you guess _______ ?
— I’ve no idea about it.
A．why was he late
B．when shall we have the sports meeting
C．where was she born
D．how much he paid for the camera
外来车辆主要采用发（）的方式进行管理。
A.临时卡
B.年卡
C.月卡
D.月卡或临时卡
