In the event of a casualty to a ship，who is responsible to make records available to the Coast Guard official authorized to investigate the casualty?（） ["Officer in Charge，Marine Inspection","The person who caused the casualty","The company man","The owner"]
战勤保障大队消防通用安全绳储备数量为20根。
With reference to a radial piston pump, which one of the following statements is false?（） ["Surrounding the fixed shaft is a hollow shaft","This hollow shaft carries radial bores","Each bore is fitted with a well-lapped plunger","There are always even numbers of bore"]
单晶硅太阳能电池加工包括哪些环节？
战勤保障大队抢险救援手套储备数量为100付。
太阳能光伏产业链包括哪些？
