（）保护电子商务系统数据不被篡改、破坏和非法复制。
参考答案：电子商务系统软件安全
—Could I have a rest, Sir.? —________, we have little time left.
A．Of course, you could
B．Of course, you can
C．Sorry, you can’t.
D．Sorry, you couldn’t
藿香尤其适宜于治疗下列哪种呕吐
A．胃虚呕吐
B．胃寒呕吐
C．胃热呕吐
D．湿浊呕吐
E．肝胃不和呕吐
