铝合金定位器使用于()区段。
A.120km/h及以下
B.120~160km/h
C.160~200km/h
D.140~160km/h
参考答案:C
You'd better take a _______ every day in summer. [ ]
A. book
B. look
C. shower
D. evening
下述哪些属于社会优待的内容?()
A.物质优待
B.优先照顾
C.走访慰问
D.帮工代工