YouareattemptingtoparalleltwoACgenerators,andthesyncopepointerisrevolvinginthefastdirectionThisindicatesthatthefrequencyoftheincomingmachineis（）.
A. higherthanthebusfrequency
B. lowerthanthebusfrequency
C. thesameasthebusfrequencybutoutofphasewithit
D. thesameasthebusfrequencyandthecircuitbreakermaybeclosedatanypointerposition
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Todeterminethenumberofableseamenrequiredonaninspectedvessel，youshouldcheckthe（）.
A. LoadLineCertificate
B. operationsmanual
C. SafetyofLifeatSeaCertificate
D. CertificateofInspection
制动轮加工后表面粗糙度不低于（）。
A. 1.5μm
B. 1.6μm
C. 1.7μm
D. 1.8μm
（）是一种理想的摩擦状态。
A. 干摩擦
B. 边界摩擦
C. 混合摩擦
D. 流体摩擦
WhentwoACgeneratorsarebeingparalleled,thebreakershouldbeclosedwiththesynchroscopepointermatinginthe（）
A. "slow"direction,justbeforethe12o'clockposition
B. "fast"direction,justafterthe12o'clockposition
C. "fast"direction,justbeforethe12o'clockposition
D. "slow"direction,justafterthe12o'clockposition
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