你可能感興趣的試題

單項(xiàng)選擇題

（）with various arrangements of barrels are the usual mooring equipment used on board ships.

A.cranes
B.winches
C.capstans
D.windlass

單項(xiàng)選擇題

In order to culture and propagate enough bacteria to treat the body and galley wastes（）

A.a new bacteria colony should be put into the plant in advance
B.the disinfection chemicals should be always used
C.the air blower should be started and keep running in advance
D.the nutrient for bacteria should put into plant in advance

感谢您访问我们的网站，您可能还对以下资源感兴趣：

中文字幕网国产

国产一级特黄a大片亚洲浮力影院久久久久久亚洲第一二三区日韩国产国产精品第不卡国产视频第一页