單項選擇題The starting current of an a-cmotor is （） the rated current.

A.the same as
B.much larger than
C.less than
D.equals


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1.單項選擇題Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

A.Sub-cooled liquid
B.Sub-cooled vapor
C.Superheated vapor
D.Liquid

2.單項選擇題If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）

A.means of rheostat the governor settings
B.a balance coil excitation
C.adjusting the governor settings
D.changing excitation

3.單項選擇題Flame failure in an automatically fired auxiliary boiler can from a/an （）

A.incorrect electrode setting
B.incorrect nozzle position
C.clogged fuel nozzle
D.broken high tension lead

4.單項選擇題（） is not installed on the main switchboar.

A.Ammeter and changeover switch
B.Power factor meter
C.Synchroscope
D.Reverse sequence relay

5.單項選擇題The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）

A.for atomizing
B.for centrifuging
C.in a storage tank
D.in the re-circulating line

6.單項選擇題To proceed to the assistance of a ship in distress is（）

A.an obligation for masters of passing by ships
B.optional for masters of passing by ships when the weather is fine
C.prohibited by the Convention SOLAS, 1974, as amended
D.prohibited by the convention STCW 78/95

7.單項選擇題The ISPS Code consists of a mandatory section-Part A, which shows（）

A.the detailed security-related requirements
B.guidelines to meet security-related requirements
C.the detailed security-related requirements and the guidelines to meet them
D.how to run a shipping company considering the potential terrorism action

8.單項選擇題（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

A.anaerobic bacteria
B.aerobic bacteria
C.air bubbles
D.disinfection chemicals

10.單項選擇題Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

A.double bottom fuel oil tank temperature
B.heater supply steam flow
C.pressure of the fuel supplied to the burners
D.attemperator steam flow in the heater discharge circuit