A.12點(diǎn)鐘 B.4點(diǎn)鐘 C.9點(diǎn)鐘 D.2點(diǎn)鐘
A.3.5,3.5 B.1.5,1.5 C.1.5,3.5 D.3.5,1.5
A.APU艙 B.APU隔艙 C.主輪艙后壁板 D.主輪艙前壁板