The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder. ["will lift","will be lifted","will close","will be closed"]
CDMA呼叫接入的优化目标是（）。
下列单元不属于海底地表形态的是（） ["大陆边缘","裂谷","岛弧","洋中脊"]
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. ["be jammed","be opened","be seated","be broke"]
The Mariner’s Handbook （）general information affecting navigation and is complementary to the Sailing Directions． ["giving","give","gives","give"]
日常优化工作可分为四个主要部分：（）、（）、（）和（）。
