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【简答题】
过量空气系数φa＞1，则此混合气称为（）混合气，当φa＜0.4时，混合气（），火焰不能传播，发动机熄火，此φa值称为（）。
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举一反三
【单选题】The writer would be less critical if fashion designers placed more stress on the ______ of clothing.
A.
cost
B.
comfort
C.
appearance
D.
suitability
【简答题】The writer would be less critical if fashion designers placed more stress on the ________ of clothing. A) cost B) appearance C) comfort D) suitability
【单选题】The writer would be less critical if fashion designers placed more stress on the ______ of clothing.
A.
suitability
B.
comfort
C.
appearance
D.
fabric
【单选题】The writer would be less critical if fashion designers placed mere stress on the ______ of clothing.
A.
cost
B.
appearance
C.
comfort
D.
suitability
【单选题】The writer would be less critical fashion designers placed more stress on the ______ of clothing.
A.
cost
B.
appearance
C.
comfort
D.
suitability
【单选题】The writer would be less critical if fashion designers placed more stress on the ______ of clothing.
A.
cost
B.
appearance
C.
comfort
D.
suitability
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