皮皮学，免费搜题
登录
搜题
【判断题】
两个表之间必须存在相互关联的字段,在两个表之间建立关系。A.
正确
B.
错误
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】On our way to the house, it was raining 1 hard that we couldn't help wondering how long it would take 2 (get) there. It was in the middle of Pearl City We were first greeted with the barking by a pack...
【简答题】On our way to the house , it was raining 1 hard that we couldn't help wondering how long it would take 2 (get) there. It was in the middle of Pearl City. We were first greeted with the barking by a pa...
【简答题】1) Were it for their help, we (not overcome) _______________________ the difficulties.
【简答题】One Monday morning, Paul and his classmates were in science laboratory for their practical chemistry lesson. The students were going to work in pairs to do an experiment. Before they began, the teache...
【单选题】Rescuers are drilling through fallen rock in order to rescue some men trapped in a cave. The drill needs lubricating from time to time. The following statements were made about the materials used for ...
A.
1 and 3
B.
1 and 4
C.
2 and 3
D.
2 and 4
相关题目：