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【简答题】
在同一个算式中，要想先算加减法，后算乘除法就必须使用括号．______．（判断对错）
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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【简答题】请将仓库各岗位与职责连线
【简答题】下列广义积分中( )是收敛的． A． B． C． D．
【简答题】下列广义积分中( )是收敛的． A． B． C． D．
【单选题】I ______ you that these goods will be delivered to you tomorrow morning.
A.
assure
B.
ensure
C.
insure
D.
sure
【简答题】Will you please contact your manufactures, and ask them to ______ the goods in time?
【单选题】If you buy our goods, our company will ________ the goods to your door. [ ]
A.
deliver
B.
pass
C.
show
D.
work
【单选题】You can return/refund the goods you bought if _____.
A.
the goods are faulty or not agreeing with the description set by the seller
B.
the product does not fit your needs but fulfills its description
C.
you decided you don’t want it anymore
D.
you bought it by accident