在某地路测中发现第一邻频干扰,但还能够正常通话,依据协议,C/A至少满足().
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MV SUDAN/MEAN AT 0200UTC IN POSITION 40.44N 141.52E PASSED A DERELICT ABOUT 40 TONS HALF SUBMERGED AND IS DRIFTING. This cable says that she met with possibly().
A. a floating wreck
B. a survivor at sea
C. a man who had fallen overboard
D. a drilling rig
两千多年前的《诗经》提出“夙夜在公”,西汉的贾谊提出“国而忘家,公而忘私”,宋代的宋仲淹提出“先天下之忧而忧,后天下之乐而乐”,明代的顾炎武提出“天下兴亡,匹夫有责”等,这些都体现了中华民族传统美德中的什么精神?
散化船一般要求具有()舱不沉制。
A. 1
B. 2
C. 3
D. 4