【简答题】一气球从离开观察员 500 f 处离地面铅直上升 , 其速度为 140m/min( 分 ) . 当气球高度为 500 m 时 , 观察员视线的仰角增加率是多少?
【单选题】The main idea of the last paragraph is that ______ .
A.
London still keeps buildings familiar to Dickens so as to commemorate him
B.
many places in London offered inspirations to Dickens
C.
a museum has been set up in honour of Dickens
D.
for all the drastic changes, some places are still reminiscent of London in Dickens's time
【单选题】下 列 哪 一 类 水 电 解 质 失 衡 最 容 易 发 生 休 克
【简答题】在市场竞争中,知识产权能够带来的竞争优势是什么?
【简答题】5, 7,8, 11, 15, ( )。
【简答题】Man: Hi. I got some good news.Woman: What are they?Man: We can make a hiking on Saturday.Woman: Oh, __________. Where shall we go?Man: How about going to the park?Woman: I don’t know. I’m quite tired ...