单项选择题
A.have a larger than normal dead band
B.produce excessive speed response to a load change
C.respond slowly to any change in engine load
D.stabilize engine speed at the new governor setting
单项选择题 The double bottom in a vessel is a space comprised of （）
单项选择题 The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the （）
单项选择题 Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）