A.nitrogen
B.Carbon dioxide
C.Sodlium
D.Oxygen
您可能感興趣的試卷
你可能感興趣的試題
A.collar band
B.guy band
C.pad eye collar
D.spider band
A.handing of cargo cases
B.handing oilskings
C.sewing canvas
D.splicing small stuff
A.bight block
B.gin block
C.heel block
D.snatch block
A.group occulting
B.composite group flashing
C.Morse letter A
D.quick flashing
A.posted with instruction on the operation of the systm
B.ventilated and equipped with explosion-proof switches
C.painted with red and black diagonal stripes
D.equipped with a battery powered source of emergency lighting
最新試題
ECDIS must be able to perform all of the following EXCEPT（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
Which of the following is not a form of precipitation?（）
The loading of the ship must be done in accordance with（）.
Bales close to the deckhead should be covered to prevent（）.
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
Manoeuvring information can not be obtained from（）.
（）is where the crew eat their meals.
In the Northern hemisphere northerly winds may cause temperature（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.