When an op-amp operates in a linear region, the op-amp should be with ( )

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  A . One or more processes are running in the background, preventing log off. B . One or more processes are paused, requiring operator input prior to logging off. C . At least one process is running in the background and it will keep running after the operator logs off D . At least one process is running in the background using nohup and it will terminate when the operator logs off

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• A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit（）.

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  A . Run c -l 0?from the command line.Run ?c -l 0?from the command line. B . Invoke SMIT for the shell environment. C . Run the SC + H?combination at the command prompt.Run the ?SC + H?combination at the command prompt. D . Use a rep?command with its UID against the /var/log/history_cmds file.Use a ?rep?command with its UID against the /var/log/history_cmds file.

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• When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.

  A . lower than B . higher than C . as much as D . the same a

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• An operational amplifier, as used in todays consoles, has a calculated gain of 5This means that when the input changes （）

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  A . check hydraulic oil levels every hour B . check the rams for overheating C . check for excessive oil leakage from rams D . drain water from telemotor cylinders each watch

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• What determines the number of events occurring in a cycle of operation in an internal combustion engine?（）

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• Which action should be taken when an auxiliary boiler in is operation?（）

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• Broken valve strips in an operating low pressure, air compressor will cause （）.

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• In an operating refrigeration system low on refrigerant, a liquid line sight glass will（）

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• An argument is sound (in the technical sense used in this course) when and only when

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• 9、7 当市场急剧变化，导致供应链成本、库存和浪费增加时，企业并没有处于最优的经营状态，而是供应链处于一种倾斜状态，称为不平衡供应链。when the market changes sharply, resulting in the increase of supply chain cost, inventory and waste, the enterprise does not operate in an optimal state, but the supply chain is in an inclined state, called imbalanced supply chain.

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