_______ markets, such as China, Brazil and Russia, are playing a major role in the present global economy and it is believed that the growth of the US economy will be led by them.
Appearing
B. Submerging
C. Emerging
Diverging
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What lives together with the little prince on his planet is only a(an) _________ flower that needs constant care and protection.
A. rough
B. tough
C. intense
Delicate
目前,发动机上应用最为普遍的增压方式是()。
A. 机械增压
B. 废气涡轮增压
C. 气波增压
D. 复合增压
进、排气门开启、关闭时刻所对应的曲轴转角称为()。
A. 点火提前角
B. 喷油提前角
C. 配气相位
D. 气门重叠角
以下哪项不是涡轮增压器按增压比的大小进行分类的()。
A. 混合增压
B. 低增压
C. 中增压
D. 高增压