Ro/Ro ship（）

读出仅含有航段的计数与控制信心，应使用( )指令。

A.RO:F

B.RO:L

C.RO:S

D.RO:C

What may NOT be used when securing heavy vehicles aboard Ro-Ro vessels ________．

A.Chain lever

B.Turnbuckle

C.Webbing

D.Chain

A、ri、ro均增大

B、ri、ro均降低

C、ri增大、ro降低

D、ri降低、ro增大

Which of the following statement(s) is/are TRUE regarding lashing requirements to secure vehicles aboard Ro-Ro vessels?

A.It is imperative that the securing of cargo on flats and trailers and in containers be adequate for both road and sea motions

B.The movements experienced by road borne cargo differ significantly from the roll and sway movements of a ship at sea

C.It is necessary for adequate number and strength of securing points on the vehicles themselves in order that lashings may be properly and safely utilized

D.All the above

用以下的哪个命令可以把server的/tmp mount 到 client的/mnt/tmp 并且是（ ）

A.mount -o ro server:/tmp /mnt/tmp

B.mount -o ro /mnt/tmp server:/tmp

C .mount -o ro client:/mnt/tmp server:/tmp

D.mount -o ro server:/tmp client:/mnt/tmp