发布频次(Frequency)
第1题:
A、开箱(筒)频次
B、查询频次
C、发运频次
D、投递频次
第2题:
A.higher than the bus equency
B.lower than the bus equency
C.the same as the bus frequency but out of phase with it
D.same as the bus frequency and the circuit breaker may be closed at
第3题:
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of ______.
A.High frequency pulses
B.Combinations of high and low frequency pulses
C.The same frequency for all stations in a chain
D.Varied long and short pulses
第4题:
频次分为邮运频次、邮件发运频次、邮件交接频次、投递频次、开箱频次、()。
市内转趟频次
略
第5题:
频次分为邮运频次、()、投递频次、开箱频次、邮件发运频次、邮件交接频次和市内转趟频次。
封发频次
略
第6题:
Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.()
第7题:
频次只分为邮运频次,开箱频次,投递频次三种。
第8题:
跳频为()。
第9题:
第10题:
Standing by on VHF frequency
Coming to VHF frequency
VHF frequency. is the best place for you to stay by
remaining in frequency. and do not change
第11题:
第12题:
对
错
第13题:
此题为判断题(对,错)。
第14题:
OFDM的英文是()
A.OverloadFrequencyDivisionMultiplexing
B.Orthogonal?Frequency?Division?Multiplexing
C.Overwhelming?Frequency?DivisionMultiplexing
D.Outstanding?Frequency?Division?Multiplexing
第15题:
频次分为( )。
A.邮运频次
B.封发频次
C.投递频次
D.开箱频次
E.邮件发 运频次
F.邮件交接频次
G.市内转趟频次
第16题:
频次分为()。
A邮运频次
B封发频次
C投递频次
D开箱频次
E邮件发运频次
F邮件交接频次
G市内转趟频次
第17题:
Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.()
A对
B错
第18题:
FDM的英文是()
第19题:
OFDM的英文全称是()
第20题:
High frequency pulses
Combinations of high and low frequency pulses
The same frequency for all stations in a chain
Varied long and short pulses
第21题:
邮运频次
封发频次
投递频次
开箱频次
邮件发运频次
邮件交接频次
市内转趟频次
第22题:
After determining that the frequency or channel appears to be no longer in use
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
Routine communications can resume if,in the Master's opinion,communications on that frequency or channel will not interfere with emergency communications
第23题: