题目

What is not allowed?A. B. C. 答案：【答案】C【解析】W: Excuse me, Sir. You are not allowed to take photos here.M: Sorry. I didn’t see the sign.有以下条件：①一锐角与一边对应相等；②两边对应相等；③两锐角对应相等．其中能判断两直角三角形全等的是A.①B.②C.③D.①②