Every lifebuoy shall be fitted with grab lines and well secured at______ providing four loops of line.(1.0)
A.three equidistant points B.four equidistant points C.five equidistant points D.six equidistant points正确答案B
Every lifebuoy shall be fitted with grab lines and well secured at______ providing four loops of line.(1.0)
A.three equidistant points B.four equidistant points C.five equidistant points D.six equidistant points正确答案B
