If a fixed foam firefighting system on a ship is not of the premix type，a sample of the foam liquid must be tested by（）. a Coast Guard inspection officer。 the safety man aboard the unit。 the designated person in charge of the unit。 the manufacturer or his authorized representative。
低温多晶硅TFT技术的最大优势是什么？
简述领导战略变革的框架是什么？
什么是市政工程施工干扰费？
财务杠杆效应是指（） 提高债务比例导致的所得税降低。 利用债务筹资给企业带来的额外收益。 利用现金折扣获取的利益。 降低债务比例所节约的利息费用。
Fire protection regulations for towing vessels require that all crew members participate in drills and receive instruction at least once a month. Who is responsible for ensuring that this takes place?（）
