皮皮学，免费搜题
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【多选题】
前厅部的主要职能包括A.
预订处
B.
接待处
C.
问讯处
D.
礼宾部
E.
电话总机
F.
商务中心
G.
收银处
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Why does HIV epidemic in some of the new EU member states and their bordering countries keep growing?
A.
In these countries heroin injecting is more common.
B.
People in these countries are not always seeking treatment for cocaine-related problems.
C.
People in these countries like to use crack rather than heroin.
D.
These countries are poorer than their western neighbors and can not provide adequate healthcare.
【简答题】斯特林发动机的工作原理?