皮皮学，免费搜题
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【多选题】
货物入库交接和登记有哪些内容?A.
接收货物
B.
接收文件
C.
签署单证
D.
登账
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】—There is a bad smell here. —Oh, dear! I_______ the gas. [ A] must forget turning off [ B ] must forget to turn off [ C] must have forgotten turning off [ D] must have forgotten to turn off
【简答题】汽油机明显燃烧期越短,越靠近上止点,汽油机的 和 越好。
【单选题】-- There is a bad smell here. -- Oh, dear! I ______ the gas.
A.
must forget turning off
B.
must forget to turn off
C.
must have forgotten turning off
D.
must have forgotten to turn off
【单选题】—Oh, dear, I forget the air tickets./--You _______ something.
A.
have left
B.
are always leaving
C.
are leaving
D.
always left
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