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【单选题】
AT89S51中断源有( )A.
5个
B.
2个
C.
3个
D.
6个
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反馈参考答案：
举一反三
【多选题】The facilities used in recreational service are:
A.
Printing service
B.
Sauna
C.
Tennis courts
D.
ballroom
【单选题】The service of a professional adviser is supplied through a visit to him by his foreign client. According to the definition of trade in service in GATS, this service is .
A.
cross border supply of service
B.
consumption abroad
C.
commercial presence in the consuming country
D.
presence of natural persons
【单选题】栓剂的置换价是指
A.
相同重量的药物与基质的体积比
B.
相同体积的药物与基质的重量比
C.
药物密度与基质密度的比值
D.
药物的体积与栓模容积之比
E.
栓模容积与药物体积之比
【单选题】Which one may NOT be the hotel service?
A.
babysitting
B.
concierge
C.
bell service
D.
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