A Certificate of Financial Responsibility attests that the vessel（）. ["has financial backing to meet any liability resulting from the discharge of oil","has the minimum required amount of P & I and hull insurance","will assume the responsibility for any damage or loss to the shipper","has financial reserves to meet reasonable expected crew costs of an intended voyage"]
什么是韧皮部装载？
In the refrigeration system, a shortage of refrigerant is indicated by （）. ["the compressor short cycling on high pressure cut out switch","high suction pressure","high head pressure","bubbles in the sight gla"]
什么是聚会礼仪？
什么是安全监察？安全保证和安全监察之间的关系是怎样的？
什么是压力流学说？
