【单选题】In this novel Cooper mentions two kinds of animals:_____. Through the description of these two animals, he makes readers deeply feel how much hardship the colonists bring to the people in America.
B.
the horse and the raven
【简答题】设计一个指针式时钟。利用图形控件设计钟面和指针,通过时钟控件控制时钟的转动。如下图所示。
【单选题】关于PING,下列说法中错误的是 ( )
【判断题】行为人有过错是承担环境行政责任的选择条件。
【单选题】Was it in the train “ Harmony”, ______ is China’s first high-speed one, that John met with his foreign friend?
【单选题】某渐开线标准直齿圆柱齿轮的齿高h=22. 5mm,齿数z=25,则其分度圆直径d=()mm。
【单选题】某渐开线标准直齿圆柱齿轮的齿高h=22. 5mm,齿数z=25,则其分度圆直径d=()mm。
【单选题】下列关于 ICMP 报文的说法中, 错误的是( )。
B.
lCMP 报文用于报告 JP 数据报发送错误