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【判断题】
函数 在 上一致连续,在 上一致连续,则 在 上一致连续;A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】托运行李体积不能超过 ?
【简答题】托运行李体积不能超过()。
【单选题】There is ______ “s” and ______ “u” in the word “bus”.
A.
an; a
B.
an; an
C.
a; an
D.
a, an
【单选题】The U. S. Department of Labor Statistics indicate that there is an oversupply of college-trained workers and that this oversupply is increasing. Already there is an overabundance of teachers, engineer...
A.
There is an oversupply of labor force and this oversupply is increasing.
B.
Many college graduates find it difficult to get jobs for which they were trained.
C.
There is a short supply of teachers, engineers and other professionals.
D.
There are more temporary jobs than permanent ones in U. S. companies.
【单选题】There is ____ “u” and _____ “s” in ____ word “useful”.
A.
an ; an ; a
B.
a; an ; the
C.
an; an ; the
D.
an ; a ; the
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