题目内容

3.If I_____the manual earlier, I would have been able to fix the machine.

A) got
B) get
C) have got
D) had got

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4._____self-driving cars are coming, the concept of driving will change dramatically.

A) Now that
B) Even though
C) In case
D) As if adt

5.Students____careers in international business can turn to us for help.

A) pursuing
B) pursued
C) pursue
D) have pursued

直径相同、材料不同的两根等长实心轴,在相同外力偶矩作用下,最大切应力,扭转角。(填“相同”或“不同”)

领导的作用与领导权力的来源有哪些？