男性求助者说,他不会交际,很孤独,这是( )。
A.社会性压力源B.精神性压力源C.社会性压力源与精神性压力源共同作用D.社会性压力源与生物性压力源共同作用
参考答案:C
The policeman asked ________ with the old women.
A.what the matter was
B.what was the matter
C.what matter was
D.what was the wrong
低压缸内压力达到()MPA时,排汽安全门动作。