()是指灰分相同时,精煤实际产率和理论产率的比值。是生产、技术管理中评定分选效果优劣的一个重要指标。
参考答案:数量效率
阅读理解
Lily is from New York , the U.S.A. She is twelve. She is in Shanghai NO.3 Junior High School. She
is in Class Eight, Grade One. Her phone number is 66786019. Dongdong is from Kunming. His English
name is Tom. He is eleven .He is in Class Seven,Grade One. His telephone number is 24524233. They
are not in the same class. They are good friends
阅读短文,选择正确的答案。
1. Lily is from _____ .
A. English
B. China
C. the U.S.A
2. Dongdong is in Class ______ .
A. Six
B. Seven
C. Eight
3. Lily and Dongdong are good_________.
A. students
B. friends
C. teachers
4. Where is Tom from ? He is from________
A. The U.S.A
B. Japan
C. China
5. How old is Lily ? She is ________
A. ten
B. eleven
C. twelve
CMM模型将软件过程的成熟度分为5个等级。从()级别开始,建立了基本的项目管理过程来跟踪成本、进度和机能,制定了必要的过程纪律,并基于以往的项目的经验来计划与管理新的项目。
A.优化级
B.管理级
C.定义级
D.可重复级