【单选题】He learns from a book that keeping a balaced diet is really important for his health, so he sometimes eats fish as a(n) ________ to his vegetarian diet.
【简答题】The author of this book is a(n) _________ (authority) expert, so we believe that he can give a logical and objective description of the .
【简答题】杂质半导体中的多数载流子主要是由 _____________ 产生的,它的浓度主要取决于 _____________ ;而少数载流子是由 _____________ 产生的,它的浓度主要取决于 _____________ 。
【简答题】杂质半导体中的多数载流子主要是由________产生的,它的浓度主要取决于_______;P型半导体中掺入_________价元素,多数载流子为_________,PN结具有____________性。 二极管在反向电压作用下,会发生_____________和_____________击穿现象。 杂质半导体中的多数载流子主要是由_____________产生的,它的浓度主要取决于________...
【简答题】The author of this book is a(n) ________ expert, so we believe that he can give a logical and objective description of the . (authority)
【单选题】机油中铁的微粒含量过高,其原因可能为()。
【单选题】机油中铁的微粒含量过高,其原因可能为( )。
【简答题】New Words vanilla n. 香草 whoa int. 惊叹声 ingredient n. 成分 clan n. 家族 fuel n. 燃料 tank n. (装液体或气体的)箱;罐 savor v. 品味;享用 Gusteau 古斯特(姓) flavor n. 味道 boo...
【单选题】机油中铁的微粒含量过高,其原因可能为( )。
【单选题】He regards that book ______ one of the worst that he's ______ read.