由已知得x-2=3,
∴x2-4x+3=x2-4x+4-1
=(x-2)2-1
=(3)2-1
=3-1=2.
— The food looked bad, but it ________ OK.
— So we can’t judge a man by his appearance.
A.is tasted
B.tasted
C.was tasted
D.taste
有一建筑,外墙厚370mm,中心线总长80m,内墙厚240mm,净长线总长为35m。底层建筑面积为 600m2,室内外高差0.6m,地坪厚度100mm,已知该建筑基础挖土量为1000m3,室外设计地坪以下埋设物体积450m3,则该工程的余土外运量为( )。
A.212.8m3
B.269m3
C.169m3
D.112.8m3