A.litmus paper
B.combustible gas indicator
C.oxygen breathing apparatus
D.oxygen indicator
您可能感興趣的試卷
你可能感興趣的試題
A.longitudinally
B.vertically
C.transversely
D.intermittently
A.between sunset and sunrise
B.only between 8 AM and 4 PM
C.during daylight hours in any visibility
D.during daylight hours in unrestricted visibility only
A.one zone to the east
B.one zone to the west
C.two zones to the east
D.two zones to the west
A.left in the sunlight
B.stowed wet
C.washed with soap
D.folded frequently
A.westerly
B.parallel to the isobars in the warm sector
C.toward the nearest high pressure area
D.faster than the accompanying cold front
最新試題
Clouds with the prefix “nimbo” in their name（）.
Define the acronym MSI（）.
Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.
Deck beams on a ship are generally spaced at equal intervals and run（）.
Diesel powered industrial trucks on a ship that are provided with safeguards to the exhaust，fuel，and electrical systems are designated（）.
Conventional anchors are least likely to hold in a bottom consisting of（）.
Denebola is found in what constellation?（）
Compliance with the terms of the load line certificate on a ship is the responsibility of the（）.
Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.
Corrosive liquids and acids should have which kind of label?（）