-48伏电源的供电回路全和压降为（）.
A.3V
B.2.6V
C.5V
D.1.8V
参考答案：A
教育学萌芽阶段有哪些基本特点？
______ the bad weather, we enjoyed our holiday very much.
A．As the result of
B．In spite of
C．Because of
D．According to
