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【简答题】

公众对讲机信道间隔是( ).

A.10.50 kHz
B.12.50 kHz
C.15.50 kHz
D.12.00 kHz

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参考答案:
参考解析:
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刷刷题刷刷变学霸
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【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic(利他主义的)"than at any time in the 17...

A.
5), the author means that ______.A. business management should be included in educational programsB. human wisdom has accumulated at an extraordinarily high speedC. human intellectual development has reached new heightsD. the importance of a broad education should not be overlooked

【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的) " than at any time in the...

A.
have never attached so much importance to moral sense
B.
have never been so financially well off as today
C.
have never been so materialistic as today
D.
have never been so interested in the arts

【单选题】房间隔缺损的分型哪一项错误( )中

A.
按缺损部位分为第一孔(原发孔)型、第二孔(继发孔)型及其它少见类型
B.
原发孔型缺损位于房间隔下部,常合并心内膜垫缺损
C.
继发孔型缺损位于卵圆窝区域
D.
其它类型有上腔型、冠状窦型与下腔静脉型
E.
缺损的数目通常是多个,偶尔可以是一个

【单选题】诊断室间隔缺损,下述哪一项不符合()

A.
胸骨左缘3、4肋间粗糙收缩期杂音
B.
肺动脉第2音亢进
C.
心电图电轴右偏,不完全性右束支阻滞
D.
X线示肺门血管增粗,肺野充血
E.
反复患呼吸道感染

【单选题】According to a survey, which was based on the responses of over 188,000 students, today"s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的 )" than at any time in the...

A.
have never been so materialistic as today
B.
have never been so interested in the arts
C.
have never been so financially well off as today
D.
have never attached so much importance to moral sense

【单选题】GSM900的收发间隔、信道间隔分别为?

A.
45MHz,200KHz
B.
45MHz,200KHz
C.
45MHz,200KHz
D.
40MHz,150KHz