皮皮学，免费搜题
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【单选题】
EOQ表示()。A.
经济订购批量
B.
物料需求计划
C.
地理信息系统
D.
全球定位系统
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.
if
B.
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C.
otherwise
D.
whether
【简答题】单选题 He wanted to know if I would worry about_________ to look after myself.A. leaving B. being left
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