在用钢丝绳定期检验时,要做()实验。
A、弯曲
B、拉伸
C、扭转
D、磨损
参考答案:A, B
Daniel is a very __________ football player and he plays very _____.
A.good ,good
B.well, good
C.good ,well
D.well, well
炼钢生铁中牌号炼04铁的[Si]含量≤0.40%。