皮皮学，免费搜题
登录
搜题
【简答题】
Success is not final and __________ (fail) is not fatal. It is the courage to continue that counts.
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】每块以太网卡都有一个用48个二进位表示的全球唯一的MAC地址,网卡安装在哪台计算机上,其MAC地址就成为该台计算机的 地址。
【单选题】A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure . If there is a current I flowing through this coil, what is the direction of ...
A.
perpendicular to and into the page
B.
perpendicular to and out of the page
C.
in the direction of the magnetic field
D.
in the opposite direction of the magnetic field