99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?()

A.excess amount of oily-water mixtures in bilges
B.insulation of piping including exhaust pipes in engine room contaminated by oil
C.improper operation of bilge pumping arrangements
D.paint peering off the uptake

微信掃碼免費(fèi)搜題