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【单选题】
体系中含有H2O、H2SO4·4H2O、H2SO4·2H2O、H2SO4·H2O、H2SO4 ,其组分数C为( )
A.
1
B.
2
C.
3
D.
4
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【单选题】It's reported that CCTV 3 _____ the concert to be held this weekend. [     ]
A.
will cover live
B.
would cover live
C.
will be covered live
D.
would be cover live
【判断题】线性表采用链表存储时,结点和结点内部的存储空间可以是不连续的。
A.
正确
B.
错误
【单选题】It's reported that by the end of the month the output of cement in the factory ______ about 10%.
A.
will have risen
B.
has risen
C.
will be rising
D.
has been rising
【单选题】异养生物利用初级生产的产品进行新陈代谢,经过同化作用形成异养生物自身的物质,称为( ) 。
A.
次级生产
B.
初级生产
C.
分解过程
【单选题】It's reported that by the end of this month the output of cement (水泥) in the factory by about 10%.
A.
will have risen
B.
rises
C.
will be rising
D.
has been rising
【单选题】— Is he coming? — It all ____ the weather. It's reported that it may rain. [     ]
A.
takes on
B.
gets on
C.
depends on
D.
turns on
【单选题】在空调系统正常工作时,下列哪一项应为冷却状态?
A.
压缩机
B.
冷凝器
C.
储液罐 / 干燥器
D.
蒸发器
【简答题】对于线性定常连续系统,非齐次状态方程的解由两部分组成,一是当初始状态为零即X(t0)=0时,由输入U(t)≠0单独作用所产生的解,称为()(填零输入或零状态)响应;二是当输入U(t)=0时,由非零初始状态X(t0)≠0单独作用产生的解,称为()(填零输入或零状态)响应,此结论说明,非齐次状态方程的解满足线性系统的()原理。
【判断题】在3DMAX中,可以按住Alt的同时按下鼠标中键旋转视图,而旋转对象则是用快捷键E。
A.
正确
B.
错误
【单选题】It's reported that by the end of last month the sale of the company ______ by 10%.
A.
has risen
B.
had been rising
C.
had risen
D.
has been rising
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