What is NOT a function of the air supply of a covered lifeboat?（）
举一反三
- The engine in a covered lifeboat is fueled with（）.
- What is the function of the feed valve A: Allows for easy pressure changes. B: Ensures that air pressure in the system is consistent. C: Prevent air loss from the brake pipes. D: Controls brake application.
- A moth possesses two pairs of wings _____ as single pair and are covered with dustlike scales. A: function B: are functioning C: that function D: but functions
- 智慧职教: 3.S1:Isn't the emergency air compressor started? S2:Yes. But the emergency air compressor can't supply enough starting air to the air receiver for the auxiliary engine. Q:How is the emergency air compressor?
- What items should NOT be covered in the opening speech?