题目内容
当膜电位绝对值增大时，称为()；反之，称为（)；细胞在发生去极化后，膜电位再向静息电位方向恢复的过程，称为（)。
查看答案
搜索结果不匹配？点我反馈
更多问题
Discusswithyourclassmateswhetherthereareanyproblemsinthefollowinglettersandhowyoucanimprovethem.Thencontrastyourimprovedletterswiththeoriginalones.DearSir/Madam:IamveryinterestedinyourproductsafterIvisitedyourstandattheParisTradeExhibitionlastmonth.Iwouldbegratefulifyoucouldtellmethepricesofyourproducts.Besidesstainless-steelcutlery,Ialsorequestaquotationformildsteelsheet,CIFShanghai.Letmeknowyourtermsofpaymentandthetimerequiredfordeliveryafteryoureceivetheorder.Iftermsanddeliverytimearesatisfactory,weshallplaceregularorders.Yoursfaithfully,LindaWang
Discusswithyourclassmateswhetherthereareanyproblemsinthefollowinglettersandhowyoucanimprovethem.Thencontrastyourimprovedletterswiththeoriginalones.DearMs.Wang:Hereisourpricelistformildsteelsheet.Ifyouaresatisfiedwithourpriceandwanttoplaceanorder,letmeknow.Sofar,nocustomerisunhappywithourtermsofpaymentanddeliverytime.Andyouwillbeoneofthem.Ifyouhaveanyquestions,don’thesitatetocontactme.Bestregards,JerrySmith
一次文献的文献特征标识（外部特征和内容特征）按一定的标准格式著录成它的替代文献（二次文献）的过程叫文献替代。
将杂乱无章的替代文献（二次文献）按一定的顺序（通常按学科类目）排列，并编制各种索引的过程叫文献调整。
微信支付 
支付宝支付