国家安全机关、公安机关依照法律、行政法规和国家有关规定,履行防范、制止和惩治间谍行为以外的其他的职责,适用《中华人民共和国反间谍法》的有关规定
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TheVHFCH16iscalled()
A. common channel for pilot service
B. aircraft calling channel
C. international distress and safety channel
D. navigation safety communication channel
Advectionfog()
A. only occurs at night and early morning
B. is most likely with Polar Maritime air
C. will only clear by insolation
D. can sometimes last for 24 hours or more in winter
Itmeans,whenB1B2B3B4equalstoAB00()
A. a meteorological report
B. an ice report
C. the first weather forecast
D. an important message that cant be rejected
除氧器水位额定参数为(1800-2100)mm,运行值(异常定值),给水泵跳闸,不破坏真空故障停机