( )为计算机辅助教育的英文缩写。
A.CAD
B.CAM
C.CAE
D.CAI
参考答案:D
Some people eat with their eyes. They prefer to order what _____ nice. [ ]
A. looks
B. smells
C. feels
D. tastes
下列说法正确的是( )
A.第二类永动机不可能制成是因为它违反了热力学第二定律
B.一定质量的气体被压缩时,其内能一定增大
C.气体分子间一定不存在分子力的作用
D.悬浮微粒越大,布朗运动越激烈