能促进细胞分裂和生长，使枝叶长得茂盛的无机盐是 A．含氮的无机盐 B．含磷的无机
题型：选择题
问题：
能促进细胞分裂和生长，使枝叶长得茂盛的无机盐是
A．含氮的无机盐
B．含磷的无机盐
C．含钾的无机盐
D．含钙的无机盐
题型：选择题
| 用方框中词的适当形式填空,一空一词，一词一次。 | |
In America, school starts  at eight thirty, so I usually get up at seven o’clock.What time does school start in China? Tell me please! I have ____2___at seven thirty. Then I go to school. My favorite is math , because I think it’s ___3_____ and I like my math teacher very much.. At school, I have a good friend. ___4___name is June. June really likes sports. She has a great sports collection. She has eleven basketballs and ten ____5____. She plays sports every day. At school, we have many sports ____6____. We can play sports there. June likes eating vegetables and fruit. She likes __7_____ and pears. She thinks they are good. ___8__ I don’t like them. I like salad. She likes reading, too. She has a big book  ____9____. There are lots of books in it. Do you want an _____10_____ friend? Please write to me. |
25钢筋（计算截面面积As=4.91mm2），试核定设备能力。滑轮组工作线数，m=11，总效率n=0.83，设备阻力R=8kW，HRB335级钢筋的冷拉控制应力δs=450MPa，设备安全系数K=1.5，是否满足要求。