单选题Regulations require that tankers handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.A cofferdamsB empty cargo spacesC gas tight bulkheadsD areas equipped with power ventilation

Prior to burning or welding on a fuel tank on a ship，regulations require that an inspection be made. An entry in the unofficial logbook is required if this inspection is made by ______.

A.a marine chemist

B.the Officer in Charge，Marine Inspection

C.the Master or person in charge of the ship

D.the National Fire Protection Association

Regulations require certain records to be retained on board for at least 3 months after a ship is involved in a casualty or until advised that they are no longer needed on board by the ______.

A.owner

B.Master

C.person in charge

D.Officer in Charge，Marine Inspection

若要使所有学科80分以上的成绩都增加5%, 80至60分的成绩都增加10%，应如何更新数据库（ ）。 A．UPDATE SC SET GRADE=GRADE*1．05 WHERE SC．GRADE>=80 UPDATE SC SET GRADE=GRADE* 1．10 WHERE SC．GRADE>=60 AND SC．GRADE <=80 B．UPDATE SC SET GRADE=GRADE* 1．10 WHERE SC．GRADE>=60 AND SC．GRADE<=80 UPDATE SC SET GRADE=GRADE* 1．05 WHERE SC．GRADE>=80 C．UPDATE SC SET GRADE=GRADE* 1．05 WIRE SC．GRADE>=80 AND SET GRADE =GRADE* 1．10 WHARE SC．GRADE>=60 D．UPDATE SC SET GRADE=GRADE* 1．10 WHERE SC．GRADE>=60 AND SC．GRADE <=80 AND SET GRADE=GRADE* 1．05 WHERE SC．GRADE>=80

Regulations require that cargo tanks in which grades B or C liquids are carried must be vented with which of the following ________．

A.Gooseneck vents

B.Flame screens

C.Pressure vacuum relief valves

D.Forced draft blowers

Regulations require that cargo pumps in tankers carrying grade D liquid cargo shall be isolated from sources of vapor ignition by ______．

A.Cofferdams

B.Gastight bulkheads

C.Passageways or living quarters

D.General cargo spaces

After a collision or accident involving an uninspected vessel，regulations require that the operator assist persons affected，but only if the operator can do so without ______.

A.further damaging the other vessel

B.undue delay

C.serious danger to his or her own vessel

D.creating a panic on either vessel

International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk shall be carried on board by ______．

A.chemical tankers constructed on or after 1 July 1986

B.chemical tankers constructed before 1 July 1986

C.All chemical tankers

D.oil tankers of 150 gross tonnage and above

Oil Pollution Regulations require any transfer or discharge of oil or oily mixtures to be recorded in the

A.bridge log

B.Master's log

C.engine room log

D.oil record

Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with ______．

A.Gooseneck vents and flame screens

B.Pressure-vacuum relief valves

C.Branch vent lines and a vent header

D.Forced draft blowers

Lifesaving regulations require that a fire drill include ______．

A.Starting the fire pumps

B.Checking the operation of watertight doors

C.Checking arrangements for abandon ship

D.All of the above