According to SOLAS the breathing apparatus onboard shall have sufficient capacity for how many minutes of operation? ________.(1.0)
A.20. B.30. C.45. D.60.正确答案B
According to SOLAS the breathing apparatus onboard shall have sufficient capacity for how many minutes of operation? ________.(1.0)
A.20. B.30. C.45. D.60.正确答案B