问题
单项选择题
技师甲说：如果行星架作为输出元件，它的转动方向总与输入元件转向相同；技师乙说：如果行星架作为输入元件，输出元件的转动方向总与行星架的转向相反。谁正确？（）
A、甲正确；
B、乙正确；
C、两人均正确；
D、两人均不正确。
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
技师甲说：如果行星架作为输出元件，它的转动方向总与输入元件转向相同；技师乙说：如果行星架作为输入元件，输出元件的转动方向总与行星架的转向相反。谁正确？（）
A、甲正确；
B、乙正确；
C、两人均正确；
D、两人均不正确。
参考答案：A
I’m Zhao Kai. I have a good friend. His name is Ben. 小题1: He comes to China because(因为) his parents work in China. 小题2: He speaks English very well, but his Chinese isn’t good. I often help him with Chinese and he helps me with English. 小题3: He has many friends in our school. Ben often plays with his friends. 小题4: His favorite food is jiaozi. I often invite(邀请) him to my home for dinner. 小题5: . Do you want to be Ben’s friend? 阅读短文，从方框中选出合适的句子填入文中，使短文完整、通顺。
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