一道数学题,全班40人做对10人做错,这道题的正确率是______%.
4040+10×100%=80%,
答:这道题的正确率是80%;
故答案为:80.
1,4,8,25,42,127,( ),334
A.204
B.175
C.125
D.111
颈椎斜位摄影,身体冠状面与台面夹角应为
A.35°
B.40°
C.45°
D.55°
E.65°