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【判断题】
有源音箱需要连接电源线才能工作。A.
正确
B.
错误
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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【简答题】量块按“级”使用时，是以量块的______为工作尺寸的，该尺寸包含了量块的______误差；量块按“等”使用时，是以量块______为工作尺寸的，该尺寸包含了量块的______误差。
【简答题】量块按“级”使用时，以量块的______作为工作尺寸，该尺寸包含了量块的制造误差；量块按“等”使用时，以经检定后所给出的量块中心长度的______作为工作尺寸，该尺寸排除了量块制造误差的影响，仅包含检定时较小的测量误差。
【简答题】Women’s roles have changed throughout the world in recent years, but nowhere so obviously as in America .As the roles of women have changed ,so have men’s .In many American homes today ,the husband st...
【单选题】In the past he was often ________, but in recent years he ________ his living by doing business with local traders. [ ]
A.
in debt; gained
B.
in debt; earned
C.
into debt; gained
D.
into debt; earned
【简答题】量块按级使用时,以量块的( )为工作尺寸;该尺寸包含了量块的( )误差。
【简答题】There have been some shocking cases of violent child abuse in Britain in recent years. To mention just two: Kristy Bamu was murdered in 2010 because his attackers thought he was a witch. He was 15. An...
【简答题】Family relations have changed in recent years in China, as we have more and more one-child families. The only child in the family becomes the center of attention and his wishes are always obeyed. The ...
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