主动脉瓣关闭不全一般不会出现下列哪项（）
A.脉压增大
B.A亢进
C.主动脉瓣听诊区叹气样杂音
D.奥-弗杂音
E.靴形心
参考答案：B
句子排排队，标序号。
( ) Fine, thanks. And you?
( ) Nice to meet you, too.
( ) My name is Li Ming. How are you?
( ) Fine, thank you. Nice to meet you.
( ) Hi. My name is Jenny. What's your name?
空气弹簧泄漏或爆裂，最高限制速（）。
A.160km/h
B.200km/h
C.120km/h
D.80km/h
