请在图中正确标出每个小磁针的N、S极．
条形磁铁外部磁感线由N指向S，而小磁针静止时N极所指的方向与磁感线方向相同．
故答案为：
汉译英：“一般原产地证书；尺码检验证书；放射性检验证书”，正确的翻译为：( )
A．certificate of origin; certificate of radioactivity; certificate of measurement
B．certificate of origin; certificate of measurement; certificate of radioactivity
C．certificate of measurement; certificate of origin; certificate of radioactivity
D．certificate of radioactivity; certificate of measurement; certificate of origin
AutoCAD中打印出来的字体是空心的怎么办？
