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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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举一反三
【单选题】Providing first-class service is one of the tactics the airline adopts to attract passengers.
A.
methods
B.
attitudes
C.
thoughts
D.
solutions
【单选题】One of the reasons why commercials are able to attract viewer attention is that______
A.
the human voices in commercials have more auditory impact
B.
people like cheerful songs that change dramatically in sound quality
C.
high-frequency sounds are used to mask sounds that drown out the primary message
D.
they possess sound qualities that make the viewer feel that something unusual is happening
【简答题】听力原文： I think it is the differences between East and West that attract one to the other. Only by exchanges can mutual understanding be improved. (83)
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