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搜题
【单选题】
(2)从10名学生(其中有8名男生,2名女生)中,任选3名的不可能事件是A.
三个都是男生
B.
三个都是女生
C.
至少一个是女生
D.
至少一个是男生
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举一反三
【单选题】在AutoCAD中,下列坐标中表示相对直角坐标输入方式的是
A.
@60,90
B.
60,90
【判断题】罩极电动机是依靠短路环对磁通的阻碍作用在电机中产生旋转磁场的。 在对单相异步电动机进行分析时，我们可以将单相异步电动机的定子一相绕组看成是两个完全一样的三相绕组。
A.
正确
B.
错误
【单选题】What can be inferred from the example of the ant-lion in the first paragraph?
A.
Instincts of animals can lead to unreasonable reactions in strange situations.
B.
When it is engaged in a chain actions it cannot be interrupted.
C.
Environment and heredity are two supplementary factors in the evolution of insects.
D.
Along the lines of evolution heredity becomes less and environment more important.
【单选题】What does the author intend to illustrate with the example of the Harts?
A.
The difficulty of paying the tuition.
B.
The increasing tuition in the university.
C.
The far-sight of the parents.
D.
The promising future of Katie.
【单选题】What can the example of Sandra Day O’Connor illustrate?
A.
Keep their eyes on the prize;
B.
Uphold a committed and focused will and spirit;
C.
Harmony comes first.
D.
Have the will to overcome profound obstacles and to work diligently.
相关题目：
【单选题】在AutoCAD中,下列坐标中表示相对直角坐标输入方式的是
A.
@60,90
B.
60,90