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【单选题】
把压缩上止点作为点火提前角计算基准点的点火系统，实际最佳点火提前角等于（）。A.
初始点火提前角+基本点火提前角+点火提前角修正值
B.
基本点火提前角+点火提前角修正值
C.
初始点火提前角+基本点火提前角
D.
初始点火提前角+点火提前角修正值
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皮皮学刷刷变学霸
举一反三
【简答题】请展开想象,写一段描绘某种情境的话,其中必须包含 “ 流水 ” 、 “ 星辰 ” 和 “ 读 ” 3个词语。(50个字左右)
【单选题】6
A.
a ． They’re beginning to get along well ．
B.
b ． They’ve always been very good friends ．
C.
C ． They have many good friends ．
D.
d ． They’ve changed their feelings towards each other ．
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