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【简答题】
某化学反应器工艺规定操作温度为(900±10)°C。考虑安全因素,控制过程中温度偏离给定值最大不超过90°C。现设计的温度定值控制系统,在最大阶跃干扰作用下的过渡过程曲线如图所示。试求该系统的过渡过程品质指标:最大偏差、超调量、衰减比和振荡周期,并回答该控制系统能否满足题中所给的工艺要求。
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举一反三
【单选题】Inform Shanghai coast radio station of the destination of the vessel survivors
A.
Shanghai coast radio station shall be informed of the name of the vessel with survivors
B.
Shanghai coast radio station shall be informed of the call sign of the vessel with survivors
C.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
D.
Shanghai coast radio station shall be informed of the number of survivors on the vessel
【单选题】Where are the operational details of the coast radio stations一for public correspondence?
A.
) Admiralty List of Radio Signals, Volume lll
B.
Admiralty List of Radio Signals, Volume I
C.
ITU Radio Regulations.
D.
List of Coast Stations and Special Service Stations.
【单选题】Inform Shanghai coast radio station of the name of the vessel survivors
A.
Shanghai coast radio station shall be informed of the name of the vessel with survivors
B.
Shanghai coast radio station shall be informed of the call sign of the vessel with survivors
C.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
D.
Shanghai coast radio station shall be informed of the number of survivors on the vessel
【单选题】Inform Shanghai coast radio station of the number of survivors on the vessel
A.
Shanghai coast radio station shall be informed of the name of the vessel with survivors
B.
Shanghai coast radio station shall be informed of the call sign of the vessel with survivors
C.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
D.
Shanghai coast radio station shall be informed of the number of survivors on the vessel
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