The orifice support tube is_______（连接到） the top of the outer cyl

The orifice support tube is_______（连接到） the top of the outer cylinder and _______(滑动) the tapered metering pin

A.connected to，slides over;

B.attached to, skid;

C.mounted to, mate with;

D.connecte to ,slide;

正确答案是A