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【单选题】
当月光石内部的层状结构的层间距较大时,产生什么颜色的浮光。A.
彩虹色
B.
红色
C.
白色
D.
蓝色
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】汽油机燃烧室的形状有哪些。
【单选题】The carburetor is placed on the engine to ______.
A.
distribute the gasoline
B.
mix the fuel and air
C.
properly lubricate the engine
D.
assist in priming the cylinders
【单选题】Students often ______ a lot of difficulties when they communicate with foreigners for the first time.
A.
meet with
B.
contact with
C.
faced with
D.
touched with
【简答题】When you are far away from home for the first time and have a lot to adjust to，you can't do it alone. However independent you are，it is good to have a roommate during your first year. Living with some...
【简答题】活塞顶部的形状与混合气形成方式,燃烧室设计和发动机压缩比大小有关,下面4个选项中的活塞实物图,哪些是典型的汽油机活塞?A. B. C. D.
【简答题】下列选项中不是流体的一项为（ ）
【简答题】carburetor
【单选题】Fuel is admitted to a diesel engine cylinder through the _____.
A.
intake valves
B.
carburetor
C.
exhaust ports
D.
injector nozzles
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