The needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.<br>A:tape face<br>B:tapered face<br>C:surface<br>D:thinner face

The needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.
A:tape face
B:tapered face
C:surface
D:thinner face

出自：海船船员证

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