单项选择题
A.a strain tank
B.a head tank
C.a service tank
D.a strainer
单项选择题 The needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.
单项选择题 The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.
单项选择题 The needle valve in a fuel valve will （） when the fuel pressure action on the needle valve tapered face exerts a force lower than that of the spring compression.