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【单选题】
制冷装置的下列元件中,按固冷剂压力由高到低通过的次序应是______。1冷凝器;2滑油分离器;3蒸发器;4储液器;5干燥器;6电磁阀;7膨胀阀;8蒸发压力调节阀。A.
②①④⑥⑦③⑧⑤
B.
②④①⑤⑥⑦③⑧
C.
②①④⑦⑥③⑧⑤
D.
②①④⑤⑥⑦③⑧
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【单选题】—What's in the box? —Oh, my new _____. [ ]
A.
sport shoe
B.
sport shoes
C.
sports shoe
D.
sports shoes
【简答题】选 1 数据选择器,它有 ( ) 位地址码,有 ( ) 个输出端。
【简答题】一长方体木块平放和侧放在水平地面上时,其受力面积之比为 3 ∶ 1 ,则平放和侧放时,对地面的压强之比是 ____________ ,压力之比是 ____________ 。
【单选题】听力原文：M: I'm looking for some sports shoes. Can you give me some advice? W: That's what I'm here for, Sir. Could you tell me what size you take? M: Of course, 41. W: Ok, we have plenty of choices for y...
A.
Few things.
B.
Not many things.
C.
Plenty of choices.
D.
Nothing in his size.
【单选题】听力原文：M: I'm looking for some sports shoes. Can you give me some advice? W: That's what I'm here for, Sir. Could you tell me what size you take? M: Of course, 41. W: Ok, we have plenty of choice for yo...
A.
few things.
B.
not many things.
C.
plenty of choice.
D.
nothing in his size.
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