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【单选题】
呕吐常见的原因是A.
伤口疼痛
B.
腹胀
C.
麻醉反应
D.
肠蠕动增强
E.
肠炎
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反馈参考答案：
举一反三
【单选题】Choose the best answer to approach the guest in the following situation. The guest is waiting to be served. You say:
A.
Just a moment, sir.
B.
(Smile and say) I'll be with you in a moment, sir.
C.
__________ (you keep quiet)
【单选题】图 2-67 所示电路中,一有源两端网络如图 (a) 所示,图 ( b ) 所示为其戴维南等效电路,则 U 0 、 R 0 分别为
A.
12 V, 3 Ω
B.
6 V, 3 Ω
C.
1 8 V,20 Ω
D.
1 8 V,10 Ω
【判断题】When making up the room a room attendant must introduce the room facilities if the guest is in.
A.
正确
B.
错误
【单选题】According to the passage, when the pod is in orbit 460 kms above the earth, the guest is going to travel around the earth ______.
A.
each 80 minute
B.
each 80 minutes
C.
every 80minutes
D.
every 80 minutes
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