隔膜计量泵长期连续运行中,三元化学剂零泄漏,使泵房空气质量得到显著()。
A、改善
B、下降
C、好转
D、提高
参考答案:A
If he_____his teacher' s advice, Asafa Powell would not be the fastest man in the world.
A.didn't follow
B.wouldn't have followed
C.hadn' t followed
D.hasn' t followed
支持谬误的情形不包括()。
A、演绎无效
B、合成谬误
C、偷换论题
D、分解谬误