冷却系的功用是保证发动机在最适宜的()下工作。
A.压力
B.温度
C.湿度
D.压强
参考答案:B
一个长方形的长是7分米,周长是26分米,宽是______分米;一个正方形的边长是12厘米,它的周长是______厘米.
(南京市2008—2009学年度第一学期期末调研测试卷) In order to stop poverty, the World Bank has ______ its focus to providing technical assistance and long-term loans to developing countries.
A.fixed
B.exchanged
C.transferred
D.switched