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【简答题】
室内给水系统的组成
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举一反三
【单选题】Whom is the person phoning?
A.
General Public Services.
B.
City Chiropractic.
C.
A water supplier.
D.
Letta Parks.
【单选题】Since we ____ for almost two weeks, I’ll need to buy a large backpack in advance to carry my supplies of food and water.
A.
have walked
B.
will be walking
C.
have been walking
D.
walked
【简答题】常压蒸馏装置中冷凝管的选择,蒸馏正溴丁烷( bp 101.6 °C)用( ),蒸馏硝基苯( bp 210 °C)用( )
【单选题】听力原文：Okay, Alan and I are ready to get going. We have the food and most of the supplies, and we've put both kayaks on the roof of your car. You should drive ahead of us—we'll follow closely behind you...
A.
Skiing
B.
Boating
C.
Camping
D.
Fishing
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