logo - 刷刷题
下载APP
【单选题】

钢箱梁中间横隔板开口率ρ≥ 0.8 时,横隔板可视为( )。

A.
实腹式
B.
空腹式
C.
框架式
D.
桁架式
举报
题目标签:隔板横隔板可视
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【多选题】减小隔板漏汽损失的措施有()。

A.
设置隔板汽封
B.
在喷管和动叶根部处设置轴向汽封,减少进入动叶的漏汽量
C.
在叶轮上开平衡孔
D.
在动叶根部处采用适当的反动度

【单选题】What is World English World English is a course in the English language. It is intended for students whose native lauguage is not English. It is a basic programme consisting of six stages. Each stage ...

A.
What is World English
B.
World English is a course in the English language. It is intended for students whose native lauguage is not English. It is a basic programme consisting of six stages. Each stage includes a Student Book, a Teacher’s Book, a Workbook, and cassette recordings. World English is further supported by separate books of readings, by tests, and by visual (可视的) aids.
C.
Who is World English for
D.
World English may be entered at any one of three different levels. The First Level, Books One and Two, is intended for students with little or no education in English. Books Three and Four make up the Second Level; they are suitable for students who have some knowledge of English. The Third Level, Books Five and Six, is intended for students who are concerned with improvement in the language.
E.
What does World English teach
F.
World English teaches four basic skills of language: listening, speaking, reading, and writing. At all levels, each skill is presented systematically. In the First Level, listening and speaking receive more attention. In the latter books, reading and writing become more important. However, reading and writing activities are presented even in Unit One of Book One; and listening and speaking exercises occur through Unit Ten of Book Six.

【多选题】减小隔板漏汽损失的方法有()。

A.
在动叶顶部安装叶顶汽封
B.
加装隔板汽封
C.
在动叶根部安装径向汽封
D.
采用适当的反动度

【多选题】离心式气压机隔板的是( )。

A.
进气隔板
B.
中间隔板
C.
段间隔板
D.
动态隔板

【单选题】下列( )不属于回转式隔板絮凝池的特点。

A.
水头损失大
B.
絮凝效果好
C.
出水流量不易分配均匀
D.
构造简单,管理方便