While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are （）.

A、A.running at the same speed

B、B.grounded

C、C.of the same polarity

D、D.in phase

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更多“While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are （）.”相关的问题

第1题

[单选题] While the parallel operation, （） must be used.

A、ammeter B、voltmeter C、synchroscope D、A+B+C

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第2题

[单选题] When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind，the approach is best made（）.

A、with bow out，stern in B、with bow in，stern out C、parallel to the dock，as close in as possible D、parallel to the dock，as far out as possible

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第3题

[单选题] What is the implication of using Deferred versus Concurrent firmware updates?（）

A、Deferred firmware updates require a reboot to be applied, while concurrent updates do not. B、Deferred firmware updates require a full power IPL to be applied while concurrent updates do not. C、Concurrent firmware updates require all LPARs to be quiesced and shutdown prior to initiating the update, while deferred updates do not. D、Concurrent firmware updates can be applied to multiple managed systems in parallel, while eferred updates must be applied sequentially.

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第4题

[单选题] TB、TW、TS、TFR分别是气圈段（导纱钩～钢丝圈）、卷绕段（钢丝圈～管纱）、纺纱段（前罗拉～导纱钩）、前罗拉包围弧上纱条的动态捻度，它们从小到大的排列顺序是（）。

A、<tw<twtw< body="">TB<TW<TS<TFR B、TW<TB<TS<TFR C、TB<TW<TFR<TS D、TFR<TS<TB<TWtw<>twtw

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第5题

[] 饱和湿空气的干球温度t，湿球温度tw，露点温度tdp间的关系是（）

A、A、t>tw=tdp B、B、t=tw<tdp C、C、t>tw>tdp D、D、t=tw=tdp

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第6题

[单选题] 空气的干球温度为t，湿球温度为tw，露点为td，当空气的相对湿度φ=90%时，则（）。

A、t=tw=td B、t>tw>td C、t<tw<td D、t>tw=td