中央控制系统是智能家居的（），负责对其他的功能子系统进行智能控制。
A.“管家”
B.“大脑”
C.“医生”
D.“保安”
参考答案：B
麻药排出时肺泡浓度下降曲线与诱导时肺泡浓度上升曲线恰好相反。
What is suggested for your investment a. Distributing your money among different companies. b. Investigating the company before investment. c. Don’t invest all your money. d. Comparing different companies before investment.
