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【判断题】
(课程目标1)晶闸管触发电路的锯齿波上升段240°,前后30°线性度不好,不使用,使用中间的180°,因此,锯齿波中点与同步信号的300°位置对应。A.
正确
B.
错误
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举一反三
【单选题】For a causal relationship to exist there must be evidence
A.
of an empirical correlation between the variables.
B.
that one variable precedes the other in time.
C.
that a third variable did not cause the changes observed in the first two variables.
D.
that one variable precedes the other in time and that the two variables are correlated.
E.
that one variable precedes the other in time, that the two variables are correlated and that this relationship is not spurious.
【简答题】流浸膏剂与浸膏剂的主要区别是什么?
【单选题】If a function needs to modify more than one variable, it must
A.
be pass by value
B.
be a void function
C.
return all values needed
D.
be a call by reference function
【简答题】教学实施效果的评价的维度包括教学结构的转变、( )与( ) 。
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