5646的报错内容是如何处理？
参考答案：
加大电流或更换氙灯
— Boys and girls. __________
— Nice to meet you.
— Nice to meet you, too.[ ]
A. She is Wang Lingling.
B. I'm Wang Lingling.
C. This is my friend, Wang Lingling.
机械加压送风系统主要由送风口、送风管、送风机和吸风口组成，其中送风口的风速不宜大于（）m/s
A.5
B.7
C.10
D.15
