油罐进油时，应（）打开进油阀门，听见进油声音正常后开大进油阀门，油罐转正常进油。
A、快速
B、缓慢
C、全部
D、停一会
参考答案：B
___________ the man who lost the purse, Mike had to stay there longer.
A．Not finding
B．Not found
C．Not having found
D．Having not found
患者的烧伤面积是
A．40%
B．42%
C．46%
D．49%
E．50%
