You may BEST turn a twin-screw vessel about，to the right，in a narrow channel by using ______.

A．Both engines ahead and helm

B．One engine only

C．Port engine ahead and the starboard engine astern

D．Both engines astern and use helm

[单选题]On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.A . one engine ahead and one engine astern，with full rudderB . one engine ahead and one engine astern，with rudders amidshipsC . both engine

[单选题]The change in trim of a vessel may be found by（）.A . dividing the trim moments by MT1B . subtracting the LCF from the LCBC . looking at the Hydrostatic Properties Table for the draft of the vesselD . dividing longitudinal moments by the displacement

[单选题]Initial stability of a vessel may be improved by（）.A . removing loose waterB . adding weight low in the vesselC . closing crossover valves between partly filled double bottom tanksD . All of the above

[单选题]A towing vessel’s capability is BEST measured by horsepower，bollard pull，maneuverability and（）.A . displacementB . stabilityC . towrope pullD . propeller desig

[单选题]The best title for the passage may be ______.A． Garbage and the EarthB． Fossil Fuel and GarbageC． Land and GarbageD． Garbage? Energy Source

[单选题]The best title for the passage may be_____.［A］ Sony’s Shopping Expedition ［B］ Sony: the Private Life［C］ Who Drove Sony to Ground ［D］ Sony: Management by Impulse

[单选题]The best title for the text may be_____ .［A］ The Green Threat ［B］ Protecting Forests ［C］ Earth’s Liberation ［D］ Terrorism Defeated

[单选题]If you are ______something, you may say, "It's cool".A． afraid ofB． angry aboutC． interested inD． unhappy with

[单选题]You may use the room as you like ___ you clean it up afterwards.A． so far as B. so long asC. in caseD. even if

[单选题]_____you may have, you should gather your courage to face the challenge.A． However a serious problemB． What a serious problemC． However serious a problemD． What serious a problem