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【简答题】
控制系统是按 进行控制的,而前馈控制是按 进行控制的;前者是 环控制,后者是 环控制。与反馈控制能够克服所有干扰不同,前馈控制能够克服 _________ 种干扰
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【多选题】发售去边境地区的车票时,应要求旅客出示国务院铁路主管部门、公安部规定的()
A.
边境居民证
B.
身份证
C.
护照
D.
边境通行证
【单选题】Which of the following is not a use of Standard Positioning Service?
A.
British military user
B.
Chinese civil user
C.
Japanese commercial user
D.
American scientific user
【单选题】原肠胚与外界相通的开孔,称为
A.
后口
B.
胚口
C.
胚孔
D.
后孔
【单选题】旅客出国要出示护照。
A.
Passengers going abroad are required to show their identity card.
B.
Passengers going abroad are required to show their driving licence.
C.
Passengers going abroad are required to show their form.
D.
Passengers going abroad are required to show their passports.
【单选题】外包物流的优点有( )
A.
使货主企业集中于核心业务
B.
将有限的资源用于核心业务上
C.
企业资源得到更加有效的利用
D.
以上都对
【多选题】负债类账户与( )账户记录的增减方向一致
A.
主营业务收入
B.
主营业务成本
C.
营业外收入
D.
营业外支出
【单选题】which of the following is not a use of Standard Positioning Service?
A.
British military user
B.
Chinese civil user
C.
Japanese commercial user
D.
American scientific user
【单选题】原肠胚与外界相通的开口,称为( )
A.
后口
B.
胚口
C.
胚孔
D.
后孔
【单选题】We use TEU as the unit of the standard containers. Its length is().
A.
40ft
B.
20ft
C.
20m
D.
40m
【单选题】We wish to develop a confidence interval for the population mean. The population follows the normal distribution, the standard deviation of the population is 3, and we have a sample of 10 observations...
A.
z = 1.645.
B.
z = 1.960.
C.
t = 1.833.
D.
t = 2.262.
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