Marine radars are used to measure ____ of ships to prevent collision with other ships, to navigate and to fix their position at sea when within range of shore. A. the course B. the speed C. the bearing and distance D. the distance of advance

单选题

Marine radars are used to measure ____ of ships to prevent collision with other ships, to navigate and to fix their position at sea when within range of shore.A. the course B. the speedC. the bearing and distance D. the distance of advance

答案解析

单选题

All of us are responsible_the babys safety

答案解析