转杯纱的结构由()和()两部分组成。转杯纱的捻度比环锭纱多20%左右
参考答案:芯纱;缠绕纤维
What we all know is that new technology is being ________to almost every industrial process. [ ]
A. applied
B. attempted
C. acquired
D. arranged
哪类盈亏是指客户未平仓合约产生的。