XJ350型修井机的组成主要由柴油机、（）、传动箱、绞车、水刹车、井架、游车系统、转盘、液压小绞车、水龙头、钻台及其他辅助设备等组成.
参考答案：运载车
9. –You should have apologized to them for not ______ at the party.
--I ________ but they didn’t forgive me anyway.
A．coming up; did
B．turning up; did
C．showing up; should have
D．appearing; should
