The valve can be manually locked to either a closed or intermediate position.in the above sentence,what does "the intermediate position" mean ?
A.打开状态
B.关闭状态
C.半开半关位置
D.锁定位置
正确答案是C
The valve can be manually locked to either a closed or intermediate position.in the above sentence,what does "the intermediate position" mean ?
A.打开状态
B.关闭状态
C.半开半关位置
D.锁定位置
正确答案是C