在GMDSS中的现场通信搜救飞机使用的频率是().
A、156.800Mhz和2182Khz
B、4125Khz
C、3023Khz和5680Khz
D、A/B/C
参考答案:D
___ crying sadly, he raised his head and let tears stream down his face on purpose.
A. To be seen
B. Seeing
C. To see
D. Having seen
下列几项费用中,不是主要导致冬期施工成本费用增加的一项是()
A.人工费及设施费
B.材料费用
C.技术措施费
D.规费