停炉的降压速度一般是(),降温速度为()。
参考答案:0.05MPa/min;1~1.5C/min
根据句意和首字母提示填空。
1. I like d________ green tea, what about you?
2. What do you usually h________ for dinner?
3. He likes bread and meat, but his sister likes n________
4. There are many k________ of vegetables.
5. There's a b________ of chicken on the table.
有20个班级参加了校园文化艺术节感恩歌咏大赛,他们的成绩各不相同,其中李明同学在知道自己成绩的情况下,要判断自己能否进入前十名,还需要知道这十个班级成绩的[ ]
A.平均数
B.加权平均数
C.众数
D.中位数