网络安全是在分布网络环境中对()提供安全保护。
A.信息载体
B.信息的处理传输
C.信息的存储访问
D.U盘
E.光盘
参考答案:A, B, C
If you had told him the truth, he ______ so angry now.
A.isn't
B.wasn't
C.wouldn't be
D.wouldn't have been
女性患者,35岁,烈日下无防晒工作几小时后,曝光部位出现红斑、水肿,自觉灼热感。应考虑()
A.夏季皮炎
B.日晒伤
C.皮肌炎
D.接触性皮炎
E.放射性皮炎