目前，一台计算机要连入Internet，必须安装的硬件是（）。
A.调制解调器或网卡
B.网络操作系统
C.网络查询工具
D.WWW浏览器
参考答案：A
— Oh, sorry, I'm late. I couldn't remember ________.
— That's all right. Come on. [ ]
A. where is your house
B. where your house is
C. Where was your house
D. where your house was
加氢装置硫化时发生飞温事故可能是硫化剂注入量偏大。
