PAL制是色同步的作用同NTSC制一样,仅是为了恢复基准的副载波
参考答案:对
阅读下文并回答问题。
Tom , Nancy, Lily and Jack are my good friends. They all love to watch different TV shows. Tom likes sports, so he likes sports shows. He says they are exciting. Nancy likes to watch comedies and sitcoms. She says they always make her laugh. But Lily can’t stand them. She thinks they are meaningless. She loves game shows. Jack doesn’t mind sitcoms. He enjoys talk shows and talent shows. He likes Zhou Libo’s talk shows very much.
小题1:Does Tom like sports shows?
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小题2:What does Jack think of sitcoms?
小题3:What does Nancy love to watch?
将技术进步看做是内生变量的经济增长模型是( )。
A.罗默的经济增长模型 B.索洛的经济增长模型C.卢卡斯的经济增长模型 D.哈罗德一多马经济增长模型