When a machine is ______, suitable material must be chosen for its parts.

admin2009-05-28 71

问题 When a machine is ______, suitable material must be chosen for its parts.

选项 A、building
B、build
C、to build
D、to be built

答案D

解析

转载请注明原文地址:https://kaotiyun.com/show/xGvK777K

大学英语三级A级

相关试题推荐

随机试题

最新回复(0)