99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<ruby id="tecwi"><small id="tecwi"></small></ruby>

<blockquote id="tecwi"></blockquote>

<ruby id="tecwi"><xmp id="tecwi"></xmp></ruby>

單項(xiàng)選擇題

（） system is arranged to ensure that water can be drawn from any tank or the sea and discharged to any other tank or the sea as required to trim the vessel.

A.The domestic water
B.Bilge water
C.Oil transfer
D.The ballast

你可能感興趣的試題

單項(xiàng)選擇題

（） connected to the moving tiller will bring the floating lever pivot and the lever into line at right angles to the screw shaft axis.

A.A cut-off lever
B.A swivel block
C.A cross-head
D.A driving gear

單項(xiàng)選擇題

Two rams of the hydraulic gear are linked at their outer ends to （） by a crosshead and swivel block.

A.the piston rod
B.the tiller arm
C.the connecting rod
D.the rudder

<ruby id="biqhw"><xmp id="biqhw"></xmp></ruby>