作业现场的（）条件和（）设施等应符合有关标准、规范的要求，工作人员的劳动防护用品应合格、齐备。
参考答案：生产；安全
If your radiotelephone fails while underway，（）.
A.You must visually signal oncoming vessels
B.You must immediately tie up in the nearest port until the radiotelephone is repaired
C.You must anchor until the radiotelephone is repaired
D.The loss of the radiotelephone must be considered in navigating the vessel
债券利率是债券投资收益与债券票面价值的比率。( )
