【简答题】汽车变速器按传动比变化方式的不同可分为哪几类?
【单选题】船舶锅炉水洗法除灰的缺点不包括________。
【单选题】According to the fourth paragraph, Bevans was found guilty because he ______.
C.
disobeyed the superior orders
D.
offended against the law of war
【单选题】第一本使海伦体会到真正历史价值的书是斯温顿的()。
【单选题】第一本使海伦体会到真正历史价值的书是斯温顿的( )。
【单选题】水洗法除灰的缺点不包括 _________ 。
【单选题】Peter had difficulty swimming across the lake, but he finally succeeded on his fourth ______.