Coolant lubricant can’t be poured into _______________
A: the mains drains
B: ground wate
C: the ground
D: all of above
A: the mains drains
B: ground wate
C: the ground
D: all of above
举一反三
- Coolant lubricant can’t be poured into _______________ A: the mains drains B: ground water C: the ground D: all of above
- The direction of the jet of coolant lubricant is __________. A: fixed and can be closed B: fixed and can’t be closed C: adjustable and can be closed D: adjustable and can’t be closed
- He was severely criticized ________that he didn’t work hard. A: for the ground B: on the ground C: in the ground D: under the ground
- 1) Have you ever heard ground collision?2) what are the possible reasons for ground collision?3) What can be done to avoid ground collision?
- What can we learn from the speech A: Ground travel can sometimes offer more service than air travel. B: Ground travel can offer as much services as air travel. C: Air travel offers more and better services than ground travel.