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【单选题】
在深冷分离中，可视为二元组分的精馏为（ ）。
A.
脱甲烷塔
B.
乙烯精馏塔
C.
脱乙烷塔
D.
以上都不是
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【单选题】机舱单元组合式报警系统中负责将不同的报警信号有选择地送到驾驶台、生活区、轮机长室等的是（）。
A.
模拟量报警单元
B.
开关量报警单元
C.
分组报警单元
D.
报警器自检单元
【单选题】(B) What Is World English World English is a course in the English language. It is intended for students whose native language is not English. It is a basic programme consisting of six s...
A.
Books One and Two
B.
Books Three and Four
C.
Books Five and Six
D.
none of them
【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) .
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.
【单选题】(六) 某产品是由4个单元组成的串联系统，每个单元寿命均服从指数分布，故障率分别为λA=002／h，λB= 0．001／h，λC=0．004／h，λD=0．003／h，则： 91．系统的故障率是( )。
A.
0．01／h
B.
0．001／h
C.
0．000 1／h
D.
0．1／h
【单选题】以下对于元组的描述,错误的是【】。
A.
元组是一种特殊的序列类型，一旦被创建，不能被修改
B.
元组的访问方式与列表相同
C.
元组中的元素不存在先后关系
D.
元组中的元素类型可以是不同的
相关题目：
【单选题】机舱单元组合式报警系统中负责将不同的报警信号有选择地送到驾驶台、生活区、轮机长室等的是（）。
A.
模拟量报警单元
B.
开关量报警单元
C.
分组报警单元
D.
报警器自检单元
【单选题】(B) What Is World English World English is a course in the English language. It is intended for students whose native language is not English. It is a basic programme consisting of six s...
A.
Books One and Two
B.
Books Three and Four
C.
Books Five and Six
D.
none of them
【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) .
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.
【单选题】(六) 某产品是由4个单元组成的串联系统，每个单元寿命均服从指数分布，故障率分别为λA=002／h，λB= 0．001／h，λC=0．004／h，λD=0．003／h，则： 91．系统的故障率是( )。
A.
0．01／h
B.
0．001／h
C.
0．000 1／h
D.
0．1／h
【单选题】以下对于元组的描述,错误的是【】。
A.
元组是一种特殊的序列类型，一旦被创建，不能被修改
B.
元组的访问方式与列表相同
C.
元组中的元素不存在先后关系
D.
元组中的元素类型可以是不同的
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