紧急停车后,为了回收脱硫系统的原料油,脱硫系统建立循环,将油气冷却后压至原料油缓冲罐。
参考答案:对
直径为d的圆形对其形心轴的惯性半径i等于()。
A.d/2
B.d/4
C.d/6
D.d/8
—Shall I inform him of the change of the schedule right now?
—I am afraid you , in case he comes late for the meeting.
A.will
B.must
C.may
D.can