its+a+door+able

杭柏俗2231逻辑函数表达式F1=B'+A'B'+A'C'+ABC -
柴眉治17221831851 ______ 化简逻辑函数F1=B'+A'B'+A'C'+ABC F1=B'+A'B'+A'C'+ABC= B'(1+A')+A'C'+ABC= B'+A'C'+ABC = B'+ABC +A'C'= B'+AC +A'C'

杭柏俗2231It's very hot .keep the door - - ,please.选哪个? A.open B.opened C.to open D.opens -
柴眉治17221831851 ______ A 这里的open 是形容词,开着的.固定搭配:keep sth +形容词 意思是:天很热,请让门开着.祝你开心.

杭柏俗2231It's cold outside.please - ____ - the door. -
柴眉治17221831851 ______[选项] A. open B. not open C. don't open D. didn't open 为什么? 我是选B的.但是很多人都选C.

杭柏俗2231在逻辑表达式中,非A+AB等于多少 -
柴眉治17221831851 ______ 逻辑函数中,有A=A+AB的公式 所以A+非AB =A+AB+非AB (依据A=A+AB) =A+(A+非A)B (依据AB+非AB=(A+非A)B) =A+B (依据A+非A=1) 就这样证明出来了啊.

杭柏俗2231there at the door stood a girl about the same height - ---. -
柴眉治17221831851 ______ the same height as mine 和我一样高 这里比较的双方是'height ',如果是there at the door stood a girl about as tall as me就对了,这里比较的就是the girl和me,所以只要弄清楚比较的对象,做到前后照应就OK!

杭柏俗2231a+aa+aaa+aa…a的计算公式 -
柴眉治17221831851 ______ =a(1+11+111+...+111...1) =a[(10-1)/9+(100-1)/9+...+(10^n-1)/9] =a/9*[10+100+1000+...+10^n-n] 后面的就不用我说了吧,如果你会等比数列的求和的话 不过你问这个问题说明你应该会了

杭柏俗2231今天英语统考的几道题,大家帮帮忙~25.My coat___________there behind the door.Can't you see it ? A.is hanged B.is hanging C.hangs D.has hung26.I like ... -
柴眉治17221831851 ______[答案] 25.My coat___________there behind the door.Can't you see it A.is hanged B.is hanging C.hangs D.has hung 前面皆错,此题选B hang是考试常考的单词,其过去式和过去分词有2种 hang hung hung 悬挂 hang hanged hanged 绞死 所以A是错的,这...

杭柏俗2231系动词的用法 -
柴眉治17221831851 ______[答案] 例如:He felt ill yesterday. 他昨天病了.(feel是系动词,后跟补足语,说明主语情况.)有些系动词又是实义动词,该动词表... 前者侧重于表示主语的特征或所处的状态,通常没有由by引导的介词短语. 如:The door was closed. 后者侧重于强调主语...

杭柏俗2231There+was+a+tap+on+the+door+改为一般疑问句 -
柴眉治17221831851 ______ Was there a tap on the door ?门上有水龙头吗?