单项选择题
A. compass B. direction finder C. loran D. sextant
Officers use sextants to observe （）.A. starsB. celestia...
单项选择题Officers use sextants to observe （）.
A. stars B. celestial bodies C. the sun D. the moon
The telegraph is the（）(设备)that connects the engine room...
单项选择题The telegraph is the（）(设备)that connects the engine room and the bridge.
A.gear B.equipment C.engine D.sextant
The captain wants to see the （）.A. chief officerB. seco...
单项选择题The captain wants to see the （）.
A. chief officer B. second officer C. third officer D. carpenter
