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【单选题】
患者全口义齿戴牙一，感觉，仅在上颌腭中缝处有轻度压痛。最可能的原因是（）A.
上颌腭中缝处缓冲不够
B.
咀嚼效率不高
C.
时间太长
D.
义齿性口炎
E.
基托不密合
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反馈参考答案：
举一反三
【简答题】solenoid valve
【单选题】A pressure drop through the refrigerant liquid line may cause _____.
A.
solenoid valve to seize
B.
compressor to hunt
C.
formation of flash gas in the liquid line
D.
expansion valve to freeze open
【单选题】When you have difficulty, do remember to _________. Two heads are better than one.
A.
make a decision
B.
give up
C.
ask for help
D.
give advice
【简答题】Two heads are better than one. ______
【单选题】The solenoid valve can be typed as a .
A.
thermal valve
B.
magnetic stop valve
C.
bellows valve
D.
bimetallic valve
【单选题】A special research team from the local medical center【C1】______experiments on completely blind babies. The babies to be tested on lived at home with their mothers of families. The research workers wou...
A.
carried
B.
did
C.
finished
D.
took
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