【单选题】在白细胞中数量最少,能合成组胺和肝素的是
【单选题】What did the workers do when they found the third floor leaned northwards? 查看材料
A.
They thought it would not cause trouble and continued their work.
B.
They made the structure of the third story towards the north taller.
C.
They demolished the tower and rebuilt it from the beginning.
D.
They asked help from experts and successfully stopped the leaning.
【单选题】在面向对象软件开发中,封装是一种 技术,其目的是使对象的使用者和生产者分离。
【简答题】What did the author realize when she found that the driver couldn't understand her?
【单选题】When was graphite first found?