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【单选题】
在国际营销活动中,遇到的最严重的政治风险是A.
外汇管制
B.
劳工风险
C.
没收
D.
进口限制
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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【单选题】如果活性污泥被接种到与原来生长条件不同的废水中(营养类型发生变化,污泥培养驯化阶段),或污水处理厂因故中断运行后再运行,则可能出现 。
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