[单选题] The humidifier’ s valve of air-condition should be ____, when the temperature is lower than 0° C.

1、[单选题]New adopted regulation of master shall_____when maintaining the security of the ship.

• A、take actions by he company’ s order
• B、 take actions by the ship owner’ s order
• C、 exercise his professional judgment
• D、 exercise his professional judgment but be constrained by the company

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2、[单选题]At an unsheltered anchorage the chief engineer officer shall consult with the master whether or not to maintain an underway watch“An underway watch” means______.

• A、a watch which is kept with lower standard
• B、 a watch which is kept when the ship isnt sailing
• C、 a watch which is kept when the ship is sailing
• D、 a watch which is kept when the ship is in a restricted visibility area

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3、[单选题]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

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4、[单选题]When the ship security alert system is activated, it shall not .

• A、initiate a ship-to-shore security alert
• B、 transmit a ship-to-shore security alert
• C、 initiate an alert identifying the ship, its location
• D、 raise a security alarm on-board the ship indicating that the ship is under threat

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5、[单选题]According to Anneal I of MARPOL 73/78, the discharging oil content of the machinery space bilges must be lower than .

• A、30 liters per nautical mile
• B、 15 liters per nautical mile
• C、 30 ppm
• D、 15ppm

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