活塞杆的二次密封装置在启用时挤注的二次密封脂()。
A、越多越好
B、挤注一点即可
C、以不滴液为准
参考答案:C
. “Would you take this along to the office for me?” “_____.”
A.That‘s right
B.With pleasure
C.Never mind
D.Not at all
our article is too long. You must _______ to about 3000 words.
A.cut it off
B.cut it up
C.cut it down
D.cut it into