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【简答题】
什么是催化剂的稳定性？
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举一反三
【简答题】A carefree summer vacation can be yours with these easy tips． 1．Fly into Alternate Airports Most major destinations are served by more than one airport．Flying into a less popular one can result in che...
【单选题】In most airports all over the world, _________ and Dragon Pass are widely acceptable VIP cards.
A.
Credit Card
B.
Debit Card
C.
Visa Card
D.
Priority Pass
【单选题】When are pests most likely to travel?
A.
When the airports are next to jungles
B.
When there is a lot of food being transported by the airplane
C.
When the insects can mate in the new region
D.
When the weather is similar in both regions
【简答题】一个形如圆锥冰淇淋纸筒，其底面直径为6cm，母线长为6cm，则围成这样的冰淇淋纸筒所需纸片的面积（侧面积）是 cm 2 ．
【简答题】已知一个圆锥的底面直径是6cm、母线长8cm，求得它的表面积为______cm 2 ．
【简答题】已知一个圆锥的底面直径是6cm、母线长8cm，求得它的表面积为 cm 2 .
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