据平面几何可知,圆与直线相切时其切点就是由被连接圆弧的圆心向被连接直线所作()。
参考答案:垂线的垂足
—Drunken drive is dangerous, isn't it?
—Yeah. That why drunken drivers _______ to prison even without causing accidents. [ ]
A. sent
B. are sent
C. send
D. are sending
1型糖尿病与2型糖尿病的区别最主要的是()
A.发病年龄
B.病情
C.体重
D.糖尿病家族史
E.对胰岛素依赖性及发生酮症倾向