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【多选题】
电动转辙机备用钥匙、手摇把由电务编号，信号工区装入箱盒钉挂在行车室内，交车站值班员保管，加锁、加封规定为：（ ）A.
未设信号工区的车站，由电务加封
B.
未设信号工区的车站，由车站加锁、电务加封
C.
设有信号工区的车站由车站、电务双方加锁
D.
设有信号工区的车站由车站、电务双方加锁，电务加封
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举一反三
【单选题】—May I keep your company there? —You may_________.
A.
if you like
B.
as you like
C.
if you’d like
D.
if you like to
【单选题】_____, I think, and the problem can be settled.
A.
If you double your efforts
B.
If you make greater efforts
C.
If you spare no efforts
D.
Some more efforts
【单选题】You have to be patient if you want to sustain your position
A.
maintain
B.
better
C.
acquire
D.
support
【单选题】If your meal costs 5 dollars and if you. want to tip the waiter before you leave, you can pay the restaurant ______ dollars.
A.
5.5
B.
5
C.
6
D.
4
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