皮皮学，免费搜题
登录
搜题
【单选题】
电路通常是由( )和导线、开关等环节构成的。A.
电压、电流
B.
电源、负载
C.
电灯、二极管
D.
电容、电感
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】His wife still took good care of him. But he thought she was acting pity. He hated to be a burden on her the rest of his life, and he decided he might as well put an end it
【单选题】His wife still took good care of him. But he thought she was acting pity.
A.
with
B.
out of
C.
in
D.
at