题目内容

过滤器依据滤芯材料和结构的不同,过滤器可分为( )、( )、( )及烧结式和磁性式等多种。

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Five less four means the same thing as five minus four.

A. 对
B. 错

Five times three equals five plus three.

A. 对
B. 错

Seven over three equals seven divided by three.

A. 对
B. 错

自定义的广播接收者需要继承()类

A. BroadcastReceiver
Broadcast
C. Service
D. ContentProvider

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