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【单选题】
烧结多孔砖的强度等级是按( )确定的。A.
抗压强度
B.
抗折强度
C.
A+B
D.
抗折荷载
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反馈参考答案：
举一反三
【单选题】More and more people have realized that we won’t have cleaner water to drink unless something _______soon.
A.
is done
B.
was done
C.
will be done
D.
to be done
【简答题】通过命令( )可以查看表或数据字典的字段信息,即表或数据字典有哪几列。如果想了解oracle有哪些数据字典供我们管理或查询,可以通过数据字典的数据字典( )进行查询获取。
【单选题】More and more people have realized we won't have cleaner water to drink unless something ______ soon. [ ]
A.
was done
B.
will be done
C.
to be done
D.
is done
参考解析：
知识点：
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