【简答题】常用的压力加工方法有挤压、拉拔、轧制、( )、( )
【判断题】一轴晶的光性方位为Ne∥OA∥c轴∥光率体旋转轴。
【多选题】关于箱形截面的凹陷铰折,( )的说法是正确的。
【简答题】一轴晶光率体是一个旋转椭球体。根据两个轴的相对大小可以分为:( )与( )。
【简答题】I took it as an honor __________________ (invite) to the meeting.
【单选题】I didn' t know what to do but then an idea suddenly ______ to me.
【单选题】Halon extinguishes a fire by ______.
A.
breaking the chain reaction
D.
coating the fuel with a nonflammable surface