进气道的特性和功用包括（）
A.使气流速度下降压力提高
B.冲压作用提高空气压力
C.以较小的流动损失将定量空气顺利引入发动机
参考答案：A, B, C
—I've got a new job in New York.
—Oh, ______, but I'll miss you. [ ]
A. that's too bad
B. that's a problem
C. that's OK
D. that's great
简述企业固定资产周转特点。
