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【单选题】
铁壳开关在控制电路中,也可用于不频繁启动(  )KW以下三相异步电动机。
A.
10
B.
20
C.
28
D.
32
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举一反三
【单选题】为了理解和定义数据流和数据存储的内容,系统创建者使用:
A.
数据字典
B.
工艺规范图
C.
用户文档
D.
数据流程图
【单选题】For questions 1-5, look at the learners’ characteristics and the three possible activities listed A, B and C. Choose the activity (A, B or C) which matches the characteristic. 1 These learners are ma...
A.
The learners in groups tell a story based on a series of pictures they look at.
B.
The learners go round the class reading posters made by the other groups.
C.
The learners listen to a recording about an athlete and fill in a table.
【单选题】第二范式是在第一范式的基础上消除了
A.
非主属性对键的部分函数依赖
B.
非主属性对键的传递函数依赖
C.
多值依赖
【单选题】Choose the activity which match the characteristics: These learners have a short attention span.
A.
The learners spend the lesson doing different choral drills.
B.
The learners spend the lesson reading an article on the computer about a favorite topic
C.
The learners read a story, then discuss it, then draw pictures describing it.
【单选题】Choose the activity that the presenter suggests for the perfect day at 10:00 in Barcelona.
A.
breakfast with coffee and toast
B.
breakfast with hot chocolate and churros
【单选题】For questions 1-5, look at the learners’ characteristics and the three possible activities listed A, B and C. Choose the activity (A, B or C) which matches the characteristic. 4 These learners don’t l...
A.
The learners write stories, practise reading first silently then aloud, and then tell them to their partners.
B.
The learners look at pictures of a story and then tell their partner their story.
C.
The learners each make up a story then tell it to their partner.
【单选题】Choose the activity that the presenter suggests for the perfect day at 16:00 in Barcelona.
A.
have a snack
B.
go shopping
【单选题】第二范式是在第一范式的基础上消除了
A.
其他三项都不对
B.
非主属性对键的传递函数依赖
C.
多值依赖
D.
非主属性对键的部分函数依赖
【单选题】For questions 1-5, look at the learners’ characteristics and the three possible activities listed A, B and C. Choose the activity (A, B or C) which matches the characteristic. 2.These learners have a ...
A.
The learners spend the lesson doing lots of different choral drills.
B.
The learners spend the lesson reading an article on the computer about a favourite topic.
C.
The learners read a story, then discuss it, then draw pictures describing it.
【单选题】第二范式是在第一范式的基础上消除了
A.
多值依赖
B.
非主属性对键的部分函数依赖
C.
非主属性对键的传递函数依赖
D.
以上说法均不正确
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