什么是HomeRF、SWAP和Bluetooth？
参考答案：
HomeRF是家庭射频，SWAP是共享无线连接协议，Bluetooth是蓝牙技术。
A．减小输电导线的横截面积有利于减少输电过程中的电能损失
B．高压输电是通过减小输电电流来减小电路的发热损耗
C．在输送电压一定时，输送的电功率越大，输电过程中的电能损失越小
D．高压输电必须综合考虑各种因素，不一定是电压越高越好
A. That comes to 980$ altogether.B. Can you explain the items one by oneC. How would you like to pay your billD. May I have your name(Dialogue- 2)( C-cashier G-guest)
G: Riley, Riley Smith from Room 316.C: Here we are, sir. ________
