更多"[单选题]Changing___of metal is the mai"的相关试题:
[单选题]The purpose of annealing any metal is to make the metal
A.harder
B.tougher
C.softer
D.smoother
[单选题] What is the main purpose of DGPS?
A.Improve positioning accuracy
B.Decrease positioning accuracy
C.Reduce operational cost
D.I don't know
[单选题] What is the main purpose of dunnage?
A. To act as ballast for light vessels
B. To provide ventilation and drainage for cargo
C. To secure the tarpaulins in place
D. To support weakened builkheads
[单选题]It is because he is too inexperienced he does not know how to deal with the situation.
A.so
B.therefore
C.that
D.upon
[单选题] He will look for another job because he can’t _____ this loud noise any more.
A. come up with
B. put up with
C. keep up with
D. grow up with
[单选题] When he wants to smoke, he forgets the fact that smoking_ ___his
Health.
A. educates
B. cheats
C. affects
D. respects
[单选题]He can tell you everything.He was just the spot when the accident happened.
A.in
B.at
C.on
D.within
[单选题] The boy said he was quite _( )_ that he had made a careless mistake.
A. known
B. aware
C. knowing
D. understanding
[单选题] He whispered to his wife _____ he might wake up the sleeping baby.
A. in order that
B. in case of
C. for fear that
D. now that
[单选题] He will never forget the days _____ he spent with his grandma.
A. that
B. when
C. where
D. on which
[单选题] When he was a boy, he used to go there and watch _____.
A. to repair bicycle
B. bicycle to be repaired
C. bicycle being repaired
D. repairing bicycles
[单选题] He said that he _____ English for over ten years.
A. has been teaching
B. taught
C. had taught
D. was teaching
[单选题] By the time he leaves university, he _____ much work experience so long as he takes a part-time job.
A. will have gained
B. has gained
C. may have gained
D. will gain
[单选题] It was not until he came back _____ he knew the police were looking for him.
A. which
B. since
C. that
D. before
[单选题] The principal purpose of adjustment of the magnetic compass is to eliminate（消除） ______ as far as possible.
A. variation
B. compass error
C. deviation
D. earth's magnetic force
[单选题] What is the purpose of VRM control ?
A. To measure distance accurately
B. To measure bearing accurately
C. To measure range and bearing
D. To adjust radar monitor
[单选题] Only when he had done it _____ that he had made a mistake.
A. he then realized
B. he realized
C. did he realize
D. before he realized
[单选题] He often thinks of _____ he can do for the country.
A. what
B. how
C. that
D. which
