更多"If the phone rings again, I（）it."的相关试题:
[单项选择] A user reports that when the phone rings in their house the wireless on their laptops becomes disconnected. Which of the following BEST describes the issue?（）
A. The cordless phones are plugged into same outlet as the router
B. The cordless phones are 5.8Ghz which interferes with wireless
C. The cordless phones are 2.4Ghz which interferes with wireless
D. The cordless phones are plugged into the RJ-11 jack
[单项选择]The main purpose of the piston oil scraper rings is to （）.
A. seal the space between the piston and the liner
B. reduce the amount of lube oil burned in the combustion chamber
C. transmit heat from the piston to the cylinder liner
D. damp out fluctuations of the piston side thrust
[单项选择]I failed the maths exam again.（）
A. Well done.
B. What a pity!
C. That's right
D. I'm glad.
[单项选择]Unbelievable! I have failed the driving test again!（）This is not the end of the world.
A. Good luck.
B. Cheer up.
C. Go ahead.
D. No problem.
[单项选择]Under no（）will I go there again.
A. circumstances
B. situation
C. giant
D. happen
[单项选择]I am so sorry to interrupt you again.（）
A. That's good.
B. It's all right.
C. I don't think so.
D. No way!
[单项选择]I was talking with my mother on the phone when we were（）suddenly.
A. cut down
B. cut off
C. cut across
D. cut back
[单项选择]A: Can I use the phone in the hall? B:（）
A. You can use them.
B. I’m afraid.
C. Of course.
[单项选择]Broken piston rings manifest themselves during the scavenge port inspection by（）
A. Lack of elastic tension, when the rings are pressed into the groove by means of a stick
B. Blackish appearance
C. Fractured rings and missing rings
D. all off the above
[单项选择]The piston rings are manufactured with a diameter （） the bore of the cylinder.
A. larger than
B. smaller than
C. equal to
D. none of the above
[单项选择]Improperly fitted piston rings in a diesel engine can cause（）
A. excessive lube oil consumption
B. lower than normal lube oil temperature
C. higher than normal exhaust back pressure
D. excessive crankshaft end play
[单项选择]When inspecting piston rings through the ports of a two-stroke/cycle diesel engine, black areas on the sealing surfaces are the result of （）
A. insufficient lubrication
B. improper piston cooling
C. blow-by
D. overload operation
[单项选择]The function of the piston compression rings used in a diesel engine is to （）
A. seal the space between the piston and liner
B. transmit heat from the piston to the cylinder liner
C. reduce the amount of combustion gas blow-by
D. all of the above
[单项选择]The question is not worth（）again and again.
A. discuss
B. discussing
C. to discuss
D. to be discussing
[单项选择]If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to（）
A. excessive ring action
B. excessive ring temperature
C. improper ring rotation
D. excessive ring face wear
[单项选择]All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.
A. the running-in period
B. the running process
C. gas exchange process
D. the boiler firing
[单项选择]Top piston rings are plasma coatedIt gives added safety for the of new lines（）
A. running-in
B. running-out
C. running on
D. running down
[单项选择]Piston compression rings used in a diesel engine function to （）
A. transfer heat from the cylinder to the piston
B. scrape oil from the sides of the piston
C. seal the combustion space from the crankcases
D. prevent any piston contact with the cylinder liner
[单项选择]The main function of piston compression rings is to （）
A. prevent excessive cylinder liner wear
B. reduce friction losses in the engine
C. seal the space between the piston and the liner
D. limit upward flow of lube oil into the combustion space
