Every radio installation shall be protected against（ ）extremes of temperature and other adverseenvironmental conditions.
A: coated oil
B: dangerous cargo
C: harmful effects of water
D: noxious atmosphere
A: coated oil
B: dangerous cargo
C: harmful effects of water
D: noxious atmosphere
举一反三
- The Master of a cargo or tanker shall be responsible that each lifeboat，except those free-fall launched，is lowered to the water with crew and maneuvered at least once every（）.
- Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（） A: Water discharging from the water outlet of the lube oil purifier B: Fuel oil discharging from the water outlet of the lube oil purifier C: Lube oil discharging from the water outlet of the lube oil purifier D: A change in the lube oil viscosity
- The total weight of cargo，fuel，water，stores，passengers and crew，and their effects，that a ship can carry，is the（）.
- This passage ______. A: concerns the damaging effects of influenza B: mentions the steps of fighting against the harmful effects of influenza C: emphasizes the worry expressed by all age groups D: both A and B
- The conditions under which a physical problem can be uniquely determined are called single-valued conditions, which include: A: Initial conditions. B: Boundary conditions. C: Geometric conditions. D: Physical conditions.