采用全淹没式高倍数泡沫灭火系统扑救A类火灾时，泡沫液和水的连续供应时间应超过（）min。
A、20
B、25
C、30
D、35
参考答案：B
________ an astronaut into space in 2003, China became the third country to send a woman into space in June, 2012.
A．Having first put
B．To have first put
C．First putting
D．Being first put
下列血栓闭塞性脉管炎的说法错误的是（）
A.青壮年多见
B.受累血管为大、中型动脉
C.通常不伴有钙化斑块
D.血管管壁全层增厚
E.节段性狭窄或闭塞
