【单选题】xt0505321某NO3-选择性电极K(NO3-,SO42-)=4.1×10-5,用此电极在1.0mol/LH2SO4介质中测定NO3-,若a(NO3-)=8.2×10-4,则测定中SO42-引起的误差为()。
【单选题】We can almost be sure that a 'nickelodeon' is a ______.
【简答题】根据主要除尘机理,目前常用的除尘器可分为: 、 、 和 。
【简答题】overbooking of __________
【简答题】—Can the project be finished as planned? —Sure, _______ it completed in time, we’ll work two more hours a day. A.having got B.to get C.getting D.get
【判断题】空压机正常停机中,在停止电动机运转,解除人为卸荷停机后,立即关闭气缸冷却水。
【单选题】In my opinion _________ matters is whether we can win together as a team instead of individuals.