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【判断题】
渗氮处理是将活性氮原子渗入工件表层，然后再进行淬火和低温回火的一种热处理方法。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】It can be deduced from the passage that the author_________the practice of intelligence testing.
A.
disapproves of
B.
resents
C.
favors
D.
challenges
【单选题】From the passage we know that 'the greenhouse effect' is an effect in which______.
A.
low temperatures are created by using a house
B.
the house is made green in order to keep heat
C.
heat is prevented from escaping outside
D.
everything is kept green in a house
【简答题】查询Students表中6月出生的学生信息。
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