问题
单项选择题
下列传动方式中，适用速度范围最广的是（）
A．带传动
B．链传动
C．齿轮传动
D．蜗杆传动
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
下列传动方式中，适用速度范围最广的是（）
A．带传动
B．链传动
C．齿轮传动
D．蜗杆传动
参考答案：C
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| My name is Nancy. I'm a student. I'm twelve. My father is a teacher. My mother is a teacher, too. John is my brother. We are all in Beijing, China. The man in a black coat is my father. The woman in a red sweater is my mother. The boy behind the tree is John. We are very happy here. We love Beijing. 根据短文内容回答下列问题。 | ||||||||||
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