【单选题】标注墙段长度和洞口宽度时,第一道尺寸线的第一个尺寸应该用()标注命令来标注。
【简答题】短文改错 I like riding my bike.Though it is not very new, but it is my best friend.I find very convenient to go anywhere with a bike.Riding gives me not only exercises but also pleasure.I use my bike almo...
【简答题】. I wrote to my parents once a week,____ I was too busy with my teaching work. A.it B.unless C.when D.as
【单选题】My suggestion is that Tom _____ to see a doctor at once.
【简答题】设y=ex(asinx+bcosx)(a,b为任意常数)为某二阶常系数线性齐次微分方程的通解,则该方程为_________.
【单选题】标注墙段长度和洞口宽度时,第一道尺寸线的第一个尺寸应使用( )标注命令来 标注
【单选题】关于路由器,下列说法不正确的是( )
D.
路由器已经成为网络间访问的瓶颈,因为路由器的时延要比交换机长得多
【单选题】My father and my mother have been married for 30 years, and never once ______ with each other.
【单选题】My mother once helped me make up fairy tales for my dolls.