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【判断题】
在可逆反应中,过量组分应是价格便宜、污染少、后处理容易且易于回收的物质( )A.
正确
B.
错误
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【简答题】由 Arry函数建立的数组的名字必须是_____________类型
【简答题】If it is necessary, I will come to the office at eight.
【单选题】I n order to ensure the accuracy of micrometer, it is necessary to carry out ( ) verification.
A.
on-site
B.
s elf
C.
regular
【简答题】When you have a pet dog, it is necessary to care for it carefully. The most i______ 小题1:part of dog-care is cleanliness. Not only does the dog have to be kept clean, _______小题2: his environment should...
【简答题】1. If
it is necessary, I will come to the
office at eight.
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