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【单选题】
This is ______Chinese book, that is ______ English book.A.
a; an
B.
an; a
C.
a; the
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举一反三
【单选题】The primary flight control system uses conventional control wheel, column and pedals to _____ the primary flight control surfaces, ailerons, elevators and rudder.
A.
command
B.
commence
C.
communicate
D.
commend
【单选题】The teacher requested that we ______ the classroom after using it.
A.
cleaned
B.
cleaning
C.
to clean
D.
clean
【单选题】She puts this love _____ by working in the after school care center. [ ]
A.
into good use
B.
be using
C.
into using
D.
be used
【单选题】Which method should be used to dynamically elect an RP when your network is using PIM version1?（）
A.
auto-RP
B.
static RP
C.
discovery mode
D.
bootstrap protocol
【单选题】The primary flight control system uses conventional control wheel, column and pedals to command the primary flight control surfaces, ailerons, _______ and rudder.
A.
flaps
B.
slats
C.
spoilers
D.
elevators
【单选题】The gym is a public place, so you should be ________ and leave all the machines clean after using them.
A.
considerate
B.
cautious
C.
subtle
D.
modest
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