简述生态条件影响接触。
简述烧结熔剂的作用、种类。
输电电缆试验报告管理是实用化验收必须考查的内容。
实用化验收不考察系统维护型号、厂家的情况。
When approaching Block Island Sound from Long Island Sound，you will enter waters governed by the International Rules of the Road when you（）. pass through The Race。 cross the territorial sea boundary。 exit Block Island Sound to the east or south。 None of the above，as Long Island Sound is governed by the International Rules of the Road。
以下不属于基站48V直流电源系统的是（）
