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【判断题】
数据透视表中的字段是不能进行修改。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】Since restored historic buildings convey a positive externality, local governments may choose to
A.
regulate the demolition of them.
B.
provide tax breaks to owners who restore them.
C.
increase property taxes in historic areas.
D.
Both a and b are correct.
【简答题】A．renewed B．recovered C．repeated D．restored
【简答题】A． followed B． dominated C． restored D． opposed
【多选题】采用钢管明管配线的安装工艺要求有（）。
A.
管路无弯曲时，长度超过30M时，应加装接线盒
B.
弯曲时曲率半径不小于外径的4倍
C.
管内导线总截面应大于管子有效面积的40%
D.
管内导线不得有接头
【单选题】The new computer virus ______, the system was restored to its normal operation.
A.
having removed
B.
being removed
C.
had been removed
D.
was removed
【单选题】美国林产品实验室研究员Alfred Stamm教授发明了低分子量的( )树脂处理木材方法,并尝试将改性后的木材用于制备飞机螺旋桨。
A.
丙烯酸
B.
脲醛
C.
糠醇
D.
酚醛
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