对顺序表执行插入操作,其插入算法的平均时间复杂度为______。
参考答案:O(n)
用所给词的适当形式填空, 每空不限一词。(每小题0.5分,共5分。请将正确答案填写在答题卡的相应位置。)
小题1:Boys prefer ___________(play) sports rather than go shopping.
小题2:I hope ___________(be) an engineer in the future.
小题3:Xi’an is one of ___________(old) cities in the world.
小题4:Would you like ___________(watch) the soccer game with us tonight?
小题5:Either you or your brother ____________(win) today’s speech competition.
小题6:The earthquake made many people become ______________(home).
小题7:The medicine that _____________ (taste) terrible is often good for our health.
小题8:Our classroom must ______________(clean) twice a day because of the flu.
小题9:If I _____________(be) you, I would say sorry to that man.
小题10:Do you like the actor _______________(name) Mr. Bean?
下列现象或反应的原理解释正确的是 [ ]
现象或反应 原理解释
A.铝箔在酒精灯火焰上加热熔化但不滴落 铝箔表面生成的氧化物具有高熔点
B.钠和氧气在加热条件下进行反应 该反应为吸热反应
C.碳酸钠和氢氧化钠溶液中滴加酚酞,溶液都呈红色 碳酸钠和氢氧化钠都是碱
D.铁制容器可用于盛装冷的浓硫酸 铁与浓硫酸不反应