【判断题】Most thermosetting polymers come from chain reaction polymerization.
【判断题】月末,本月已入库发票账单尚未收到的原材料应暂估入账,下月初做相反分录予以冲回。
【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】(2013年)月末,本月已入库发票账单尚未收到的原材料应暂估入账,下月初做相反分录予以冲回。( )
【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.