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【单选题】
规模较小的住宅物业，采用招标程序选择物业服务企业可能会出现的问题不包括（ ）。
A.
费时较多
B.
程序复杂
C.
费用较高
D.
缺乏竞争力
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】在数字电路中,二进制数转换成十进制数的方法是( )
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