口语表达中的节奏安排必须遵循的原则不包括()。
A.简单与复杂相结合
B.内容与形式相结合
C.整体与细节相结合
D.重复与变化相结合
参考答案:A
A.(A) When we are attending an English language course.
B.(B) When we are watching an interesting TV program.
C.(C) When we are enjoying the murmuring of a brook.
D.(D) When we are listening for a friend’s voice in a crowd.
鼠笼式电机转子断条时;电动机功率下降,转速降低;起动困难。