分类：教育/科学-学习帮助
问题：我遇到不明白的地方，急Withanelectronictypew 
Wh an electronic typewriter,we can get evenly typed characters regardless of the pressure_____we strike the keys.A which      B with which C that      D by that为什么选B？望指教！
回答：应该是固定用法 这是定语从句吧