钢材受力后它的应力与应变是()虎克定律。
A、符合;
B、不符合;
C、在弹性极限内符合;
D、在弹性极限内不符合。
参考答案:C
Despite their _______ plans, Chinese carmakers will find it hard to break into the developed world until this shortcoming is well behind them.
A.parallel
B.accessible
C.adequate
D.grand
熔体粘度偏高会引起()。
A、终缩聚釜搅拌器扭距下降
B、熔体泵出口压力降低
C、熔体过滤器压差增高
D、熔体端羧基含量偏高