The bottom row of plating next to the keel of a lifeboat is known as the（）.

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• Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?（）

  A . SELECT UNIQUE dept FROM staff B . SELECT DISTINCT dept FROM staff C . SELECT (dept) UNIQUE FROM staff D . SELECT (dept) DISTINCT FROM staff

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• The lengthening of a crack formed in the shell plating of a ship may be prevented by （）.

  A . welding brackets across both ends of the crack B . chipping out and slot welding the entire crack C . drilling a hole at each end of the crack D . cutting a square notch at each end of the crack

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• Upon underwater detection，there were no apparent defects on the bottom plates，bilge keels，rudder and propeller of the said vessel.This kind of wording usually appeared on（）.

  A . ship surveyor's report B . a ship's certificate C . a cargo inspection report D . a diver survey report

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• The rising velocity of the globules carries them upwards where they become trapped by the under surfaces of plates and （）until the enlarged globules have sufficient rising velocity to travel along the plate surface and break away at periphery.

  A . A.disperse B . B.coalesce C . C.compress D . D.shrinkage

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• All of the following operating characteristics are listed on the name-plates of motors used aboard ship except the（）

  A . temperature rise B . input kilowatts C . horsepower D . operating voltage

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• Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）

  A . The cursor is only protected from updates and deletes by concurrent applications. B . The row is only protected from positioned updates and deletes that reference another cursor of the same application. C . The cursor is protected from positioned updates and deletes that reference another cursor of a different application. D . The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.

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• The heavier outboard strake of deck plating on a ship is called the deck（）.

  A . stiffener B . beam C . stringer D . doubler

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• A solution to overcome tripping defects is an arrangement of special plates on either side of the flukes，designed to set them in the correct tripping position. These special plates are called（）.

  A . trippers B . stocks C . stabilizers D . palm

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• What type of constraint is used to ensure that each row inserted into the EMPLOYEE table with a value in the WORKDEPT column has a row with a corresponding value in the DEPTNO column of the DEPARTMENT table?（）

  A . A check constraint on the EMPLOYEE table B . A unique constraint on the EMPLOYEE table WORKDEPT column C . A foreign key reference from the DEPARTMENT tables DEPTNO column to the WORKDEPT column of the EMPLOYEE table D . A foreign key reference from the EMPLOYEE tables WORKDEPT column to the DEPTNO column of the DEPARTMENT table

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• In the reign of William I,the（）were at the bottom of the feudal scale.

  A . knights B . villeins C . lesser nobles D . freeme

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• Which of the following will DELETE all of the rows from table T03?（）

  A . DELETE * FROM TABLE T03 B . DELETE ALL FROM T03 C . DELETE * FROM T03 D . DELETE FROM T03

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• Which of the following scenarios will ensure that the value of the NEXT_STEPNO column in a given row of table TABLEX exists as a value of column STEPNO (usually in another row) in the same table?（）

  A . Define a UNIQUE constraint on the columns NEXT_STEPNO and STEPNO. B . Define a CHECK constraint on the NEXT_STEPNO column (NEXT_STEPNO = STEPNO). C . Define column STEPNO as the primary key of TABLEX and column NEXT_STEPNO as a foreign key referencing column STEPNO of the same table. D . Define column NEXT_STEPNO as the primary key of TABLEX and column STEPNO as a foreign key referencing column NEXT_STEPNO in the same table.

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• What term indicates the line drawn at the top of the flat plate keel（）.

  A . Base line B . Molded line C . Designer's waterline D . Keel line

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• Moving of an anchor over the sea bottom to control the movement of the vessel defines（）.

  A . dredging ( of anchor ) B . dragging ( of anchor ) C . weighing anchor D . walking out anchor

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• What is the purpose of a striker plate? （）

  A . Provides surface for applying force on machinery B . Provides landing surface for the sounding bob C . Absorbs machinery vibration D . Prevents valve stem over-travel

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• Upon underwater（）by divers，there are no apparent（）on the bottom plates of the said vessel.

  A . detection，defects B . defection，defects C . defects，defection D . defects，detectio

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• A term applied to the bottom shell plating in a double-bottom ship is（）.

  A . bottom floor B . outer bottom C . shear plating D . tank to

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• Metal plates that cover the top of the hawsepipe are called（）.

  A . footings B . plugs C . buckler plates D . stop water

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• （）measured at the midship section and taken from outside of the ship’s side shell plating on one side to the outside of ship’side shell plating on the other side.

  A . Length overall B . After perpendicular C . Amidships D . Extreme breadth

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• Upon underwater detection, there were no apparent defects on the bottom plates, bilge keels,rudder and propeller of the said vessel. This kind of wording usually appeared on（）.

  A . ship surveyor's report B . a ship's certificate C . a cargo inspection report D . a dive survey report

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• If the voltage between the plates of a parallel-plate capacitor is doubled, the capacitance of the capacitor （）.

  A．is halveD B．is doubleD C．quadruples． D．remains the sam E．

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• The 1 plates of the Earth are formed from _______.

  A．the oceanic crusts and continental crusts B．the crusts and the mantle C．the crusts and the top and solid part of the mantle D．the continental crusts and the solid part of the mantle

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• The fact that the fourth plate from the All You Can Eat Country Buffet generated more satisfaction than the fifth plate is an example of

  A．increasing marginal utility． B．diminishing marginal utility． C．diminishing total utility． D．the paradox of valu E．

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• In the west of China, people plant rows of trees to prevent the wind _______ the earth away.

  A．blowing B． blows C． to blow D． blew

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