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【简答题】
不计算,比较定积分 和 值的大小.
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举一反三
【简答题】建厂 地址 的选择具体要求是什么?
【单选题】You may find it _______ that Charlie was taught to sing as soon as he could speak.
A.
astonishing
B.
astonished
C.
to be astonished
D.
to be astonishing
【简答题】People may sing or dance with their friends there.
【单选题】He doesn't like _____, but he enjoys _____. [ ]
A.
sing, dance
B.
to sing, to dance
C.
singing, to dance
D.
to sing, dancing
【单选题】— Can you sing a song in English? — No, I ________________. [ ]
A.
may not
B.
mustn't
C.
needn't
D.
can't
【简答题】在设计低浓度气体吸收塔时,如下各项中对操作方程没有影响的有()A. 液气比; B. 塔的操作条件（温度、压力）; C. 塔的结构; D. 物系的性质;
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