皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【简答题】
方程2x 2 -3x-4=0的根的判别式的值为______,根的情况是______.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】以下属于资本市场金融工具的是()
A.
国库券
B.
汇票
C.
股票
D.
CDs
【简答题】用所给词适当形式填空 A number of boys _______ (be) playing basketball at the moment.
【简答题】A.2:00 PM. B.12:30 PM. C.4:30 PM. D.5:30 PM.
【单选题】Turn to us for legal advice at any time you need it.
A.
when
B.
how
C.
where
【单选题】Which type of graph would bestshow the number of boys and the number of girls in each grade?
A.
Line graph
B.
Double bar graph
C.
Pie chart
D.
Scatter plot
【简答题】A number of boys _______ (be) playing basketball at the moment.
【判断题】弯曲模的角度必须与冲压件的弯曲角度一致。( )
A.
正确
B.
错误
【单选题】动能为300eV的电子的运动波长为(    )
A.
7.09pm    
B.
70.9pm    
C.
2.24pm    
D.
22.4pm
【单选题】Look! A large number of boys _____ the ground, the number of them _____ 20. [     ]
A.
is running, are
B.
are running, is
C.
are runing, is
【判断题】弯曲模的角度必须与冲压件的弯曲角度一致
A.
正确
B.
错误
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题