在义齿基托覆盖区内,不需要缓冲模型的部位是()
A.上颌腭隆突区
B.下颌舌隆突
C.下颌舌骨嵴区
D.上颌结节
E.下颌舌侧翼缘区
参考答案:E
Consumption of the total life-cycle effort in software maintenance is()that in software development.
A.less than
B.larger than
C.equal or less than
D.equal or larger than
读该图中的四幅岛屿图,回答问题。
沿海海洋渔业资源最丰富的是:()
A.①
B.②
C.③
D.④