在UNIX的操作系统中,若为BShell,普通用户的提示符为:()
A.#
B.&
C.%
D.$
参考答案:D
When Tracy was told her son's illness could be cured, she left the hospital .
A.in peace
B.in surprise
C.in time
D.in relief
1mol某气态烃完全燃烧,生成3mol CO2和2mol H2O,求该气态烃的分子式。