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【多选题】
下面关于调节器参数的工程整定方法的应用条件哪些是正确的?()
A.
响应曲线法适用于广义对象模型为带有纯滞后的一阶惯性环节
B.
临界比例度法要求被控变量允许等幅振荡，且对象为或有纯滞后
C.
衰减曲线法对于过渡过程比较快的系统，衰减比和振荡周期难以准确检测
D.
临界比例度法适用于比例度特别小的过程
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举一反三
【单选题】The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the （）.
A.
quantity of fuel to be received
B.
flash point of the fuel as it is received
C.
fuel temperature as it is received
D.
viscosity of the fuel being received
查看完整题目与答案
【多选题】用主题词“获得性免疫缺陷综合征”检索,可检索出哪些概念:
A.
爱之病
B.
爱滋病
C.
艾滋病
D.
AIDS
查看完整题目与答案
【简答题】when the fuel is provided by the supplier ,what specifications of the oil can you get from the supplier receipt ?
查看完整题目与答案
【单选题】可通过投资组合几乎完全化解的风险是( )
A.
系统性风险
B.
非系统性风险
C.
道德风险
D.
国别风险
查看完整题目与答案
【单选题】对 Course表,使用课程号,课程名,学分,及额外增加的iXueshi字段创建视图,学时为学分乘以16,正确的SQL语句是( )。
A.
Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
B.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course
C.
Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
D.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
查看完整题目与答案
【单选题】对 Course 表,使用课程号,课程名,学分,及额外增加的 iXueshi 字段创建视图,学时为学分乘以 16 ,正确的 SQL 语句是 ( ) 。
A.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course
B.
Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
C.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
D.
Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
查看完整题目与答案
【单选题】对 Course表，使用课程号，课程名，学分，及额外增加的iXueshi字段创建视图，学时为学分乘以16，正确的SQL语句是( )。
A.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
B.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course
C.
Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
D.
Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
查看完整题目与答案
【单选题】When fuel is injected late into a diesel engine cylinder,（）.
A.
the exhaust will be clear
B.
fuel consumption will be low
C.
all the fuel will be burned at top dead center
D.
fuel consumption will be high
查看完整题目与答案
【单选题】课程表的关系模式:course(cno,cname,credit,semester), 有一门新课,课程号是: c07 ,课程名是:网页设计与制作,学分是: 3 ,开课学期是: 5 ,将该新课信息插入到 Course 表中,使用( )语句。
A.
INSERT INTO Course VALUES(’c07’,’ 网页设计与制作 ’,3,5)
B.
INSERT INTO Course VALUES(c07, 网页设计与制作 ,3,5)
C.
INSERT INTO Course VALUES(’c07’,’ 网页设计与制作 ’,’3’,’5’)
D.
INSERT INTO Course VALUES(’ 网页设计与制作 ’ ’c07’,3,5)
查看完整题目与答案
【单选题】在学生课程管理中分别使用以下两种表示,即: ( 1 )表 SC (学号,姓名,课程号,课程名,学时,学分,成绩); ( 2 )表 STUDENT (学号,姓名,课程号)和表 COURSE (课程号,课程名,学时,学分,成绩)。 则以下叙述正确的是 ________ 。
A.
采用（ 1 ）表示的数据冗余量大，查找速度也慢
B.
采用（ 2 ）表示的数据冗余量大，查找速度也慢
C.
采用（ 1 ）表示的数据冗余量大，但查找速度快
D.
采用（ 2 ）表示的数据冗余量大，但查找速度快
查看完整题目与答案
相关题目：
【单选题】The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the （）.
A.
quantity of fuel to be received
B.
flash point of the fuel as it is received
C.
fuel temperature as it is received
D.
viscosity of the fuel being received
查看完整题目与答案
【多选题】用主题词“获得性免疫缺陷综合征”检索,可检索出哪些概念:
A.
爱之病
B.
爱滋病
C.
艾滋病
D.
AIDS
查看完整题目与答案
【简答题】when the fuel is provided by the supplier ,what specifications of the oil can you get from the supplier receipt ?
查看完整题目与答案
【单选题】可通过投资组合几乎完全化解的风险是( )
A.
系统性风险
B.
非系统性风险
C.
道德风险
D.
国别风险
查看完整题目与答案
【单选题】对 Course表,使用课程号,课程名,学分,及额外增加的iXueshi字段创建视图,学时为学分乘以16,正确的SQL语句是( )。
A.
Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
B.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course
C.
Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
D.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
查看完整题目与答案
【单选题】对 Course 表,使用课程号,课程名,学分,及额外增加的 iXueshi 字段创建视图,学时为学分乘以 16 ,正确的 SQL 语句是 ( ) 。
A.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course
B.
Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
C.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
D.
Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
查看完整题目与答案
【单选题】对 Course表，使用课程号，课程名，学分，及额外增加的iXueshi字段创建视图，学时为学分乘以16，正确的SQL语句是( )。
A.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
B.
Create View ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 from Course
C.
Create Proc ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
D.
Create Index ShiTu As Select Cno,Cname ,Ccredit ,Ccredit *16 as iXueshi from Course
查看完整题目与答案
【单选题】When fuel is injected late into a diesel engine cylinder,（）.
A.
the exhaust will be clear
B.
fuel consumption will be low
C.
all the fuel will be burned at top dead center
D.
fuel consumption will be high
查看完整题目与答案
【单选题】课程表的关系模式:course(cno,cname,credit,semester), 有一门新课,课程号是: c07 ,课程名是:网页设计与制作,学分是: 3 ,开课学期是: 5 ,将该新课信息插入到 Course 表中,使用( )语句。
A.
INSERT INTO Course VALUES(’c07’,’ 网页设计与制作 ’,3,5)
B.
INSERT INTO Course VALUES(c07, 网页设计与制作 ,3,5)
C.
INSERT INTO Course VALUES(’c07’,’ 网页设计与制作 ’,’3’,’5’)
D.
INSERT INTO Course VALUES(’ 网页设计与制作 ’ ’c07’,3,5)
查看完整题目与答案
【单选题】在学生课程管理中分别使用以下两种表示,即: ( 1 )表 SC (学号,姓名,课程号,课程名,学时,学分,成绩); ( 2 )表 STUDENT (学号,姓名,课程号)和表 COURSE (课程号,课程名,学时,学分,成绩)。 则以下叙述正确的是 ________ 。
A.
采用（ 1 ）表示的数据冗余量大，查找速度也慢
B.
采用（ 2 ）表示的数据冗余量大，查找速度也慢
C.
采用（ 1 ）表示的数据冗余量大，但查找速度快
D.
采用（ 2 ）表示的数据冗余量大，但查找速度快
查看完整题目与答案