在精馏塔单元中待塔釜液位LIC101升至()以上时全开加热蒸汽入口阀V13手动缓开调节阀TV101给再沸器缓慢加热
A.10%
B.20%
C.50%
D.40%
参考答案:B
We had wanted to finish our task by noon, but it didn’t quite ________ as planned.
A.carry on
B.carry out
C.work on
D.work out
干式汽缸套和汽缸体采用()。
A.间隙配合
B.过盈配合
C.A、B均可