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【单选题】
下列关于沉降过滤叙述正确的是
A.
沉降操作只能用来分离悬浮液
B.
过滤操作适用于分离含固体物质的非均相物系
C.
沉降分离的原理是依据分散物质与分散介质之间的粘度差来分离的
D.
过滤推动力是指悬浮液的压力大小
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【单选题】Why has people's skepticism about shopping online vanished to a great extent?
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【单选题】在如下所示的JAVA代码中,this指代的是? public class Person{ private String name; public void setName(String name){ this.name=name; }
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【单选题】Why has people's skepticism about shopping online vanished to a great extent?
A.
Because the online market has now proved to be safe and secure.
B.
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Because online shopping has gained acceptance with open wallets.
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