【判断题】Most thermosetting polymers come from chain reaction polymerization.
【判断题】Pultrusion process can be used with thermoplastic polymers and thermosetting polymers.
【单选题】图纸中出现的机械设备、操作室、电缆沟、线槽和柜箱盒等装置都需要按照()来绘制
【判断题】对称三相电源进行三角形连接时,UL=UP
【简答题】对称三相电源进行三角形连接时,闭合回路的()电动势等于()
【单选题】在固态有限固溶的三元共晶相图中,单析固溶度曲面指的是()
【判断题】Thermosetting plastics are those that do not soften when heated
【单选题】A thermosetting polymer like epoxy______
A.
typically can not be recycled.
B.
usually involves the mixing of two or more components which are then polymerized.
C.
is relatively strong because molecules are crosslinked together.
D.
can not be easily re-shaped after curing
【判断题】Polycarbonate is a thermosetting plastic.