【多选题】形成流体动力润滑的必要条件有:
C.
两表面间形成楔形空间,在相对运动中,润滑油从大口流向小口
【单选题】Traditional Chinese doctors believe it's important _____ a balanced diet. [ ]
【简答题】They said goodbye to him as he got a_____ the train at Union Station.
【多选题】形成流体动力润滑的必要条件是( )。
C.
具有一定的相对滑动速度,且相对运动方向是由大端指向小端
【简答题】A. equal B. matched C. proportional D. balanced
【简答题】什么是接受,构成一项有效接收应当具备什么条件?
【单选题】It's very important to eat a _____ diet. [ ]
【简答题】什么是接受,构成一项有效接收应当具备什么条件?
【多选题】Situation: Jim asked Magid to come into his home. They talked about what they had been doing since Magid left the company. Magid stayed about three hours and then said, "I'd better go now." Jim got up...
A.
Jim thought that Magid should have stayed longer. Three hours was too short for a visit.
B.
Jim thought that Magid should have apologized for visiting without calling first.
C.
Jim thought that Magid had stayed too long and that he should have said something like,“I'm sorry if I've disturbed."