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【单选题】
（49）__________ 查看材料A.
wireless microphone is attached to the dog's collar， which sends information to the gadget held by the owner.
B.
Nobody really knows how a dog feels.
C.
It was followed by' I'm stronger than you' as the dog growled （嗥叫）and sniffed（嗅） at the visitor.
D.
More customers are expected when the English version is launched this summer.
E.
Now，the Japanese girl thinks she knows.
F.
Each one of these emotions is then linked to a phrase like'Let's play'. 'Look at me' or 'Spend more time with me'.
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举一反三
【单选题】Stand by look-out on the port wing.
A.
Look-out shall be posted on the bow
B.
Look-out shall be posted on the bridge
C.
Look-out shall be posted on the port wing
D.
Look-out shall be posted on the starboard wing
【单选题】The () is the main structure of generating lift for a fixed-wing aircraft.
A.
power plant
B.
wing
C.
tail
D.
airframe
【单选题】New fighter jets are being designed so that the wing is modifiable, depending on the speed at which the plane is going. Which of the following would be a logical adjustment of the wing for such jets?
A.
At speeds above 500 mph, the top of the wing would become flatter.
B.
At speeds above 500 mph, the top of the wing would become more curved.
C.
At speeds above 500 mph, the bottom of the wing would become curved.
D.
None of the above
【单选题】The ______is the main structure or body of the fixed-wing aircraft.
A.
wing
B.
empennage
C.
nacelle
D.
fuselage
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