【单选题】【消耗次数：1】
舌面音，发音时舌面抬起与构成阻碍。
①
软腭
②
硬腭
③
上齿背
④
上齿龈
参考答案：
复制
纠错
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【判断题】
每个<img width=14 height=15 src=https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/temp/msohtmlclip1/01/clip_image002.gif style=background:url(https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>次多项式在复数域中都有<img width=14 height=15 src=https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/temp/msohtmlclip1/01/clip_image002.gif style=background:url(https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>个根.
①
正确
②
错误
【判断题】
两个零次多项式的最大公因式是0<img width=5 height=19 src=https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/temp/msohtmlclip1/01/clip_image002.gif style=background:url(https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>
①
正确
②
错误