Formanyyears,peopleelectricears.However,makingthemhasbeenmoredifficultthanpredicted.()A.haddreamedofB.havedreamedofC.dreamedofD.dreamof
For many years,people __ electric ears.However,making them has been more difficult than predicted.( )
A. had dreamed of
B. have dreamed of
C. dreamed of
D. dream of
For many years,people __ electric ears.However,making them has been more difficult than predicted.( )
A. had dreamed of
B. have dreamed of
C. dreamed of
D. dream of
设有关系模式W(C,P,S,C,T,R),其中各属性的含义是:C——课程,p——教师,S——学生,G 2020-05-26 …
莫氏Ⅰ型的特点,以下哪项是对的()A.P波出现无规律B.P-R间期逐渐延长C.P-R间期恒定D.无Q 2020-06-07 …
某地区今年1月,2月,3月患某种传染病的人数分别为52.61.68.为了预测以后各月的的患病人数, 2020-06-20 …
某地区今年1月,2月,3月患某种传染病的人数分别为52,61,68.为了预测以后各月的病患人数,甲 2020-07-08 …
1.r,h,n,y,e2.c,e,s,c,n,i,e3.p,1,a,p,e4.r,a,t5.p,o 2020-07-09 …
(1)I=U/R(2)W=I²RT(3)W=U²T/R(4)W=UIT(5)W=PT(6)P=UI 2020-07-18 …
谁能帮我组个英语单词①e、n、o、p、t、w、y②e③d、t、y④b、c、f、m、p、r、t、v⑤ 2020-07-29 …
关于概率的问题P(W|C)的求解如下:P(W|C)=P(W)P(C|W)/P(C)其中,P(C)是 2020-07-30 …
7、关于功率,下列说法正确的是A、由P=W/t,P与W成反比B、由P=W/t,p与t成正比C、由P= 2020-10-30 …
某地区今年1月,2月,3月患某种疾病的人数为52,61,68.为了预测以后各月的患病人数,甲选择了模 2020-11-30 …