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
a.b.c.d.m都表示有理数,若ab互为相反数,且a不等于0,c.d互为倒数.丨m丨=3.求(a 2020-05-16 …
已知a+b+c=H a+b+e=J a+d+e=K b+c+d=M c+d+e=N 求a=?b=? 2020-05-16 …
现有A,B,C,D四种物质,已知A,B为黑色粉末,C,D为无色气体,A,B在高温下作用能生成D,A 2020-05-17 …
已知:∠A=(90+x)°,∠B=(90-x)°,∠CED=90°,射线EF∥AC,2∠C-∠D= 2020-06-12 …
将整数1,2,3…2009按下列方式排列成数表,用斜十字框“╳”框出任意的5个数(如下图),如果用 2020-07-30 …
1.设a,b,c,d,m,n都是正数,P=根号下(ab)+根号下(cd),Q=根号下(ma+na) 2020-07-30 …
推断题:现有如下反应(反应条件均不给),推断物质⑴A→B+C+D⑵C+E→C+F+D⑶D+G→H⑷ 2020-07-30 …
所有不超过1000的数中含有数字3的自然数的个数Vara,b,c,d,m:integer;Begin 2020-10-30 …
请问谁知道用matlab求解多元超越方程组的方法或思路或函数不?形如:a*(1+a+a^3+d+d^ 2020-12-14 …
1.若P(a,b)、Q(c,d)都在直线y=mx+k上,则PQ的绝对值用a、c、m表示为().A.( 2020-12-31 …