皮皮学，免费搜题
登录
搜题
【单选题】
订阅号主要为卖家向买家传达信息 ,认证前后( )可以群发一条消息A.
30天
B.
7天
C.
1天
D.
2天
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】______( 塑料 ) are used in many modern articles instead of wood, metal and so on.
【单选题】Years ago, people would have______ the notion that robots would operate on patients instead of surgeons.
A.
smiled on
B.
beamed upon
C.
laughed at
D.
amused with
【简答题】一阶电路的全响应从不同的角度出发可分解为 + ,也可分解为 + 。
【简答题】The concept of homeschooling is not a new one. Homeschooling means educating children at home instead of sending them to public or private schools. Nowadays, homeschooling has become popular in many c...
相关题目：