Especially in adverse weather,risk of collision with an offshore supply vessel increase when the vessel is moored to what side of the unit?（）. ["Upwind","Downwind","Crosswind","Downcurrent"]
切线支距法测设圆曲线时，为了避免支距过长，一般是由（）施测。 ["QZ点分别向ZY点和YZ点","QZ点向ZY点","QZ点向YZ点","ZY点和YZ点分别向QZ点"]
叙述低压蒸发系统工艺流程。
Every ship should hoist（）when approaching and entering ports. ["its flashing light","the ship's name","its identification","its signal letter"]
关税的贸易扩大效果（）。 ["属静态效果","属动态效果","在贸易创造效果出现时会出现","在贸易转移效果产生时会出现"]
水中常见的病原微生物有哪几类？
