皮皮学，免费搜题
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【多选题】
肝素的药理作用特点是A.
口服无效
B.
作用慢而持久
C.
体内外均有作用
D.
作用强
E.
有促纤溶作用
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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A.
May I tell him who is calling?
B.
No, you can not. He doesn’t want to speak to you.
C.
He is available. May I take a message?
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【简答题】Pat: May I speak to Jane? Ann: ______.
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A.
Who are you?
B.
Ultimate Computers.
C.
Who is speaking?
D.
I'm the secretary.
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A.
Ultimate Computers.
B.
Who are you?
C.
Who is speaking?
D.
I'm the secretary.
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