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【单选题】
使用( )功能键可以实现“工具选项板”打开与关闭的切换。A.
Ctrl+4
B.
trl+3
C.
Ctrl+1
D.
F8
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】What risk do doctors see in their dual role as patient care providers and financial overseers? 查看材料
A.
They may be involved in a conflict of interest．
B.
They may be forced to divide their attention．
C.
They may have to use less effective drugs．
D.
They may lose the respect of patients．
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B.
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C.
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D.
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