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搜题
【判断题】
电容具有隔直流通交流的特点。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Where is the meeting room?
A.
Across the hall.
B.
Through the meeting room.
C.
Out of the door and at the right side.
D.
Near the door and at the left side.
【简答题】已知25 m ?2?10 n =5 7 ?2 4 ，求m、n．
【单选题】—Did you have anyone ____________the meeting room? --Yes, I had the meeting room __________ .
A.
to clean; clean
B.
cleaned; cleaned
C.
clean; cleaned
D.
cleaned; clean
【简答题】已知a 3 ?a m ?a 2m+1 =a 25 ，求m的值______．
【简答题】已知a 3 ?a m ?a 2m+1 =a 25 ，求（-1） m 的值．
【单选题】______is forbidden in the meeting-room, but we are allowed in the room for smokers.
A.
Smoking, smoking
B.
Smoking, to smoke
C.
To smoke, smoking
D.
To smoke, to smoke
【简答题】小幅面的激光切割机采用丝杠传动，大幅面的激光切割机采用齿轮齿条传动，这两种传动方式有什么不同，各有什么优缺点？
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