当飞机进入晴空湍流区,发生弱颠簸和中度颠簸的频率为百分之() ,强颠簸不足百分之()
A.75 25
B.95 5
C.90 10
D.80 20
参考答案:B
—I think Tracy needs to find herself a new job.
—_____. This is what we've been talking about.[ ]
A. Exactly
B. Cheer up
C. Please do
D. Really
计算机内部数据常用的代码错误的是()。
A.十进制
B.二进制
C.八进制
D.六进制
E.十六进制