Which statement is TRUE concerning fuel vapors on a vessel().
A. Fuel vapors gather in the lowest portions of the vessel
B. Fuel vapors can only be ignited by an open flame
C. Vent outlets should be located above the level of the carburetor air intake
D. None of the above
“关关雎鸠,在河之洲”一句用表现手法的是()
A. 象征
B. 比
C. 赋
D. 兴
我国现在采用的1980年大地坐标系的原点设在()。
A. 西安
B. 北京
C. 上海
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited().
A. It is required on all vessels
B. It may be located in a conspicuous place in the wheelhouse
C. It may be located at the bilge and ballast pump control station
D. All of the above