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【单选题】
对讲机分为专业机和民用机两大类。专业机是指发射功率大于（）W的机器。
A.
2.0
B.
3.0
C.
4.0
D.
5.0
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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】根据国家环境电磁波卫生标准，室内天线的发射功率应该控制在()范围之内。
A.
5-10dBm/载频
B.
10-15dBm/载频
C.
5-15dBm/载频
D.
8-15dBm/载频
【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】WA2110-AG与WA1208E-GP的11g最大射频发射功率分别为（）.
A.
10dBm、20dBm
B.
20dBm、23dBm
C.
20dBm、27dBm
D.
23dBm、27dBm
【单选题】NDB发射功率很大是（）？
A.
所以在天线上会产生很高的高频电压，因此要特别注意不要被电击
B.
高频电压没有危险
C.
天线上不可能产生很高的电压
D.
电流很小没有危险
【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.
the influences of their instructors
B.
the financial goals they seek in life
C.
their own interpretations of the courses
D.
their understanding of the contributions of others
【单选题】某射频直放站设计中，假设直放站发射功率为ER接受施主基站的功率为PR，隔离度记为I，关于I的说法，正确的是（）。
A.
I>ER-PR
B.
I>PR-ER
C.
I
D.I
【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
相关题目：
【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】根据国家环境电磁波卫生标准，室内天线的发射功率应该控制在()范围之内。
A.
5-10dBm/载频
B.
10-15dBm/载频
C.
5-15dBm/载频
D.
8-15dBm/载频
【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】WA2110-AG与WA1208E-GP的11g最大射频发射功率分别为（）.
A.
10dBm、20dBm
B.
20dBm、23dBm
C.
20dBm、27dBm
D.
23dBm、27dBm
【单选题】NDB发射功率很大是（）？
A.
所以在天线上会产生很高的高频电压，因此要特别注意不要被电击
B.
高频电压没有危险
C.
天线上不可能产生很高的电压
D.
电流很小没有危险
【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.
the influences of their instructors
B.
the financial goals they seek in life
C.
their own interpretations of the courses
D.
their understanding of the contributions of others
【单选题】某射频直放站设计中，假设直放站发射功率为ER接受施主基站的功率为PR，隔离度记为I，关于I的说法，正确的是（）。
A.
I>ER-PR
B.
I>PR-ER
C.
I
D.I
【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
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