高压管道需用()连接。 A.法兰接口 B.活接头 C.三通 D.弯头 发布时间:2017-05-10 06:08 │ 来源:www.tikuol.com 题型:不定项选择 问题: 高压管道需用()连接。A.法兰接口B.活接头C.三通D.弯头
题型:不定项选择 My father bought a desk for me. It is ________wood. [ ]A. made of B. made from C. made into D. made up of 查看答案