联锁循环气自动放空后,延迟6秒引起循环压缩机停车的联锁是()。
A、干气密封压力高联锁
B、循环气流量跟踪差低联锁
C、洗涤塔分离罐液位高联锁
D、润滑油压力低联锁
参考答案:A, D
He often makes his sister _____ ,but that time he was made ___ by his sister. [ ]
A. laugh, to laugh
B. laugh, laugh
C. laugh, laughing
断肢(指)的再植最好在多少小时内进行()
A.6小时内
B.7小时内
C.8小时内
D.10小时内
E.12小时内