Air cocks usually positioned at the () in a circulating system is used to get rid of the air in the system.

时间:2019-04-14 04:55:20 关键词:the,at,circulating

Air cocks, usually positioned at the () in a circulating system, is used to get rid of the air in the system.

A.bending joint

B.expansion tank

C.weld

D.the highest point

答案解析

D