【简答题】Meeting in progress,quiet please.
【单选题】Keep quiet, please. We're not allowed _____ much noise in the reading room. [ ]
【判断题】磁敏二极管受温度影响较大,即在一定测试条件下,磁敏二极管的输出电压变化量 D U ,或者在无磁场作用时,中点电压 U m 随温度变化较大。因此,在实际使用时,必须对其进行温度补偿。
【单选题】____ quiet, please. [ ]
【单选题】Be quiet, please. We're going to have an English test. Now I'm going to ______ your papers. [ ]
【多选题】关于路边烧烤的描述正确的是:
B.
烧烤食品可能导致肿瘤的发生,尤其大量苯并a芘的产生会致癌