【判断题】N型半导体是在本征半导体内掺入微量的三价元素杂质。
【单选题】With exports _______ an important role in its economic growth now, this province has been affecte
A.
35.With exports _______ an important role in its economic growth now, this province has been affected by the global economic downturn. A.played
【简答题】返回电流与启动电流的比值称为继电器的()
【单选题】According to the passage, the actions of the depositors of Mrs. Vaught's bank were affected mainly by the ______.
A.
ease with which they could get their money
B.
confidence that Mrs. Vaught showed
C.
failure of several other banks to open
D.
confidence shown by other depositors of the bank
【单选题】It was impossible to avoid _____ by his opinion。
【单选题】关于混合成本,下列说法中不正确的是
A.
混合成本就是“混合”了固定成本和变动成本两种不同性质的成本
C.
混合成本的变化与业务量的变化保持着纯粹的正比例关系
D.
混合成本变化不能与业务量的变化保持着纯粹的正比例关系
【多选题】下列关于混合成本的说法中,不正确的有( )。
A.
混合成本介于固定成本和变动成本之间,它因产量变动而变动,但不是成正比例关系
B.
变化率递减的曲线成本的总额随产量的增加而减少
C.
在一定产量范围内总额保持稳定.超过特定产量则开始随产量成比例增长的成本叫半变动成本
D.
对于阶梯成本,可根据业务量变动范围的大小,分别归属于固定成本或变动成本
【单选题】The study of Dr. Ruth Mace and Dr. Rebecca Sear shows that a child's growth may be affected ______.
A.
by the absence of the mother
B.
by the negce of the father
C.
by the death of the grandmother
D.
by the death of the grandfather