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【单选题】
干冰与适当的有机溶剂混合时,如与乙醇或丙酮混合物可达到低温约多少度A.
-78度
B.
-188度
C.
-20至-40度
D.
-33度
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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举一反三
【简答题】调制信号中干扰包括_________和___________。
【单选题】Cultural Puzzle Read the following situation and choose the appropriate answer. What would you do if you gave your American boss an expensive gift and he or she said, "I'm sorry I really can't accept ...
A.
You could say, “If you don’t accept this gift, I'll quit. " or “I won't take this class anymore.”
B.
You could try to find out his or her reasons for not accepting the gift.
C.
You can insist many times on giving the gift until he or she accepts it.
【简答题】根据对话内容，补全所缺单词，每空一词。 Jim: Hello, Bill. Let's go swimming. Bill: Sorry, I'm 1 I can't. Jim: Why not ? Bill: I don't feel 2 3 . Jim: What's 4 with you? Bill: I feel tired. Jim: Why don't you go to see th...
【单选题】按照顺序选出政策规划的五个环节 () 1 方案抉择 2 问题界定 3 后果预测 4 方案设计 5 目标确立
A.
⑤②④③①
B.
⑤②④①③
C.
②⑤④③①
D.
②⑤④①③
【单选题】—Jim, I'm afraid I can't go to your party tonight. My grandma is ill. —________. [ ]
A.
I'm sorry to hear that
B.
That's all right
C.
She has to stay in bed
D.
Don't worry
【单选题】What would you do if you gave your American boss an expensive gift and he or she said, "I'm sorry I really can't accept this gift.
A.
You could say, “If you don’t accept this gift, I'll quit. " or “I won't take this class anymore.”
B.
You could try to find out his or her reasons for not accepting the gift.
C.
You can insist many times on giving the gift until he or she accepts it.
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