【单选题】已知等差数列{a n }的前项和为S n ,若M、N、P三点共线,O为坐标原点,且 ON = a 15 OM + a 6 OP (直线MP不过点O),则S 20 等于( )
【简答题】说明下列常用略写记号的中文意思: (1)pp (2)p (3)mp (4)mf (5)f (6)cresc (7)dim (8)accel (9)rit (10)a tempo
【单选题】Suppose the domestic supply (Q S ) and demand (Q D )for MP3 players in the United States are given by the following set of equations: Q S = –25 + 10P Q D = 875 – 5P The consumer surplus will _____ by ...
【多选题】程序代码如下,请问会有什么结果? 1. interface O{void mO();} 2. interface P{void mP ();} 3. interface Q extends O, P{void mQ();} 4. abstract class A implements Q{ 5. publicvoid mA(){} 6. publicvoid mO(){} 7. abstra...
E.
编译失败,因为类B的mP()方法没有加上public
【单选题】下述有关颌骨骨髓炎的论述正确的是:
B.
新生儿颌骨骨髓炎多见于上颌骨,常有大块死骨形成