填空题

( )线路图 ( )反向冲洗设备

【参考答案】

N、R
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单项选择题
A．Lack of food supply.B．The vegetables are not fresh.C．It’s far away from.D．The prices are too high.
A．Lack of food supply.
B．The vegetables are not fresh.
C．It’s far away from.
D．The prices are too high.
填空题
( )挤奶设备 ( )储奶罐
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