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【单选题】
下列结论中不正确的是A.
三个命题变元的布尔小项 Ø P ∧ Q ∧ Ø R 的编码是 m 010
B.
三个命题变元的布尔大项 Ø P Ú Q Ú Ø R 的编码是 M 101
C.
任意两个不同的布尔小项的析取式必为式
D.
任意两个不同的布尔大项的析取式必为式
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【单选题】mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">双作用叶片泵配油盘有（ ）。
A.
一个进油窗口，一个出油窗口
B.
两个进油窗口，两个出油窗口
C.
一个进油窗口，两个出油窗口
D.
两个进油窗口，一个出油窗口
【单选题】双作用叶片泵配油盘有两( )。( )
A.
一个进油窗口，一个出油窗口
B.
两个进油窗口，两个出油窗口
C.
一个进油窗口，两个出油窗口
D.
两个进油窗口，一个出油窗口
【单选题】Task 2Running your small business requires good staff. Once you find them, you don't want to let them go elsewhere.During an employee's time with a company, there are a number of forces that influence...
A.
makes employees satisfied with their work
B.
drives employees to work more efficiently
C.
. causes employees to leave their company
D.
. keeps employees to remain in their company
【单选题】Task 2Running your small business requires good staff. Once you find them, you don't want to let them go elsewhere.During an employee's time with a company, there are a number of forces that influence...
A.
how to keep your employees
B.
the importance of key employees
C.
how to challenge your employees
D.
the difference between “ push ” and “ pull ”
【单选题】Task 2Running your small business requires good staff. Once you find them, you don't want to let them go elsewhere.During an employee's time with a company, there are a number of forces that influence...
A.
Make them behave well.
B.
Meet with them every day.
C.
Pay regular visits to their family.
D.
Make sure they are well-treated.
【单选题】Task 2Running your small business requires good staff. Once you find them, you don't want to let them go elsewhere.During an employee's time with a company, there are a number of forces that influence...
A.
They have no rewarding opportunities.
B.
The company is located in a remote area.
C.
They make many mistakes in their work.
D.
The company is not big enough for development.
【简答题】双作用叶片泵配油盘上有 个配油窗口,斜盘式柱塞泵配油盘上有 个配油窗口。
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