WLAN一次一密方式获取的密码，在（）小时内有效
A.6
B.12
C.24
D.48
参考答案：A
标准化扩孔钻和锉的刃部长度为（）
A.16mm
B.18mm
C.21mm
D.25mm
E.28mm
— Don't forget to turn off the lights if you are the last one to leave.
— _____. [ ]
A. Me neither
B. I won't
C. Me too
D. I will
