皮皮学，免费搜题
登录
搜题
【单选题】
固定电源或移动式发电机供电的移动式机械设备，应与供电电源的( )有金属性的可靠连接。A.
外壳
B.
零线
C.
接地装置
D.
以上都不正确
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
【单选题】Which is NOT the reason why people like the game?
A.
They are longing for country life.
B.
They can have fun with friends.
C.
The game can relax people and give them a new experience.
D.
They are confident enough to face the real world.
【简答题】产品总成本费用要素包括哪些？何谓生产成本？
【单选题】Which is NOT the consequence of students' employment according to the author?
A.
Students feel that they deserve to be fun when they get home from work.
B.
Students don't spend enough free time studying.
C.
Schools and colleges find it difficult to demand quantity or quality of work from students.
D.
American students out-perform students from Japan and Europe.
【单选题】Which is NOT the nickname for New York?
A.
The Big Apple
B.
The Big City
C.
The Empire City
D.
The Fun City
相关题目：