二进制数11000000对应的十进制数是
A.384
B.192
C.96
D.320
参考答案:B
解析: 二进制数转换成十进制数的方法是按权展开。11000000B=192D。
—What’s wrong with you, Ann?
—My mother is ill. I have to her at home.
A.look at
B.look for
C.look after
D.look around
当其它温度条件一定时,蒸发温度越高:()。
A.单位质量制冷量
B.单位冷凝热负荷
C.单位容积制冷量
D.单位功耗