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【单选题】
变频器的P1 参数代表( )A.
下限频率
B.
上限频率
C.
加速度时间
D.
减速度时间
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反馈参考答案：
举一反三
【简答题】与1000H等值的十进制数是( ) xh15
【单选题】光波长转换技术(OTU)的作用是
A.
进行波长转换，提供标准、稳定的光源，提供较大色散容纳值的光源，作为再生器使用
B.
对经过线路衰减后的小信号进行预放大
C.
对各相关部件的故障告警、故障定位
D.
在一个新波长上传送有关DWDM系统的网元管理和监控信息
【单选题】Why does CareerSite’s agent offer each job hunter only three job options?
A.
To focus on better job matches.
B.
To attract more returning visits.
C.
To reserve space for more messages.
D.
To increase the rate of success.
【单选题】The chairman ______ that this year's prize winner is Dr. Hunter.
A.
announced
B.
declared
C.
stated
D.
pronounced
【单选题】If Hunter's artistic work were to return to its earlier political forum, assessments of it would be likely to contain which of the following?
A.
An evaluation that accords high status to her work
B.
Acknowledgement of her political acumen but dismissal of her subject matter as contentious
C.
Agreements with assessments made prior to the 1980's but acknowledgments of the evolution in her art work
D.
Placement of her among the foremost artists of the pre-1980's
E.
A reclassification of her work as psychoanalytical rather than political
【简答题】与1000H等值的十进制数是( )
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