本课配套习题挑战模式2/5
单选题
难度系数:
2.1、某粮食的亩产量为n kg,增产20%后的亩产量应为()
A: (1-20%)n kg |
B: (1+20%)n kg |
C: (n+20%)kg |
D: (n×20%)kg |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP5Y2V5L2NMQ==
- 答案:Qg==
PGltZyB3aWR0aD0xNTMgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMzQvckJBQ0ZGVElwSmZSMmw5bkFBQUNobWhzRUY4NDkzLnBuZyI+5pWF6YCJQuOAgg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.若是七次单项式,则n的值为()
A: 4 |
B: 3 |
C: 2 |
D: 1 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Y2V6aG55byP55qE5qyh5pWw5oyH5omA5pyJ5a2X5q+N55qE5oyH5pWw55qE5ZKM
- 答案:Qg==
5Y2V6aG55byP55qE5qyh5pWw5oyH5omA5pyJ5a2X5q+N55qE5oyH5pWw55qE5ZKM44CC4oi0PGltZyB3aWR0aD05MCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9CMS9yQkFDSmxUSXBKdVRrRlY1QUFBQndwanNXTTQ3MjgucG5nIj4s6Kej5b6XPGltZyB3aWR0aD0zNyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9FRi9yQkFDSjFUSXBKdnlJek1yQUFBQlVSM2ZuMnMxNjgucG5nIj7mlYXpgIlC
本课配套习题挑战模式4/5
单选题
难度系数:
4.
单项式-2.1 × 102ab2c是()次单项式。
A: 2 |
B: 3 |
C: 4 |
D: 5 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+5Y2V6aG55byP55qE5qyh5pWw5qaC5b+1PC9wPg==
- 答案:Qw==
PHA+6Kej77ya4oi15Y2V6aG55byP55qE5qyh5pWw5piv5omA5pyJ5a2X5q+N5oyH5pWw55qE5ZKM77yM5LiN5ZCr5pWw5a2X55qE5qyh5pWw77yMPGJyPuKItC0yLjHDlzEwPHN1cD4yPC9zdXA+YWI8c3VwPjI8L3N1cD5j55qE5qyh5pWw5pivMSsyKzE9NO+8jDxicj7mlYXnrZTmoYjkuLrvvJo077yM6YCJQzxicj48L3A+
本课配套习题挑战模式5/5
单选题
难度系数:
5.已知代数式:(1)2x+3;(2)x3;(3)0;(4),其中是单项式的共有()
A: 1个 |
B: 2个 |
C: 3个 |
D: 4个 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP5oyJ54Wn5Y2V6aG55byP5qaC5b+15Yik5pat
- 答案:Qg==
5Y2V6aG55byP5piv5pWw5oiW5a2X5q+N55qE56ev77yM5Y2V54us5LiA5Liq5pWw5oiW5LiA5Liq5a2X5q+N5Lmf5piv5Y2V6aG55byP44CC5omA5Lul77yIMu+8ie+8iDPvvInmraPnoa7jgILpgIlC44CC