皮皮学，免费搜题
登录
搜题
【简答题】
活性污泥曝气池的 MLSS = 3g/L ,混合液在 1000mL 量筒中经 30min 沉淀的污泥容积为 200mL ,计算污泥沉降比,污泥指数、所需的回流比及回流污泥浓度。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】短文填词 Mr Brown's wife was a nurse.One day he was driving her home ________a green taxi traveled crazily close to his and sped by.The taxi driver was in such a h ________ that he didn't see a huge truck...
【单选题】After driving for 20 miles, Jackson realized that he______in the wrong direction.A．was drivingB．d
A.
16．After driving for 20 miles, Jackson realized that he______in the wrong direction. A．was driving
B.
drove
C.
had been driving
D.
had driven
【单选题】( ) in thought while driving, he almost ran into the car coming in the opposite direction.
A.
Losing
B.
Lost
C.
Lose
D.
To lose
【单选题】After driving for 20 miles, he suddenly realized that he ____ in the wrong direction.
A.
has been driving
B.
had been driving
C.
was driving
D.
drove
【单选题】西欧工商业城市兴起的三个主要途径是:
A.
罗马故城遗址、王宫、商业中心
B.
罗马故城遗址、中世纪军事城堡、商业中心
C.
罗马故城遗址、中世纪军事城堡、王宫
D.
王宫、中世纪军事城堡、商业中心
相关题目：
参考解析：
知识点：
题目纠错 0
发布
