在金信工程中,基本的安全防御系统主要包括(),(),数据安全。
参考答案:物理安全;网络安全
Whenever and wherever we are, keep in mind that we should listen more to others. It’s wrong to express ourselves without thinking. Just as we all know, ___________.
A.a good beginning makes a good ending
B.a still tongue makes a wise head
C.a great hope makes a great man
D.a good husband makes a good wife
紫外线光即()
A.UV
B.MM
C.μ
D.Mμ之意