热释电红外线传感器内部装有（）。
A、晶体管和厚膜电阻
B、晶体管和滤波器
C、场效应管和厚膜电阻
D、场效应管和滤波器
参考答案：C
We’ll take a honeymoon trip to Venice. Would you like to my dog for me while we are away?
A．look at
B．search for
C．watch over
D．care about
不完全蛋白质
