甲数与乙数的比是3比4，那么甲数是乙数的百分之多少，甲数比乙数多百分之几

Can you drive a car?改为同义句___you _____ ______drive a car? 矩阵中的长度概念是怎么定义的? c++中矩阵结构的定义,概念. 已知集合A={x|x^2+4x+a=0},B=[2,-2]且A被B包含,则a的取值集合是? The driver sits____the car.A.in the front of B.at front of C.in front D.at the front 英语翻译They are drawing up the legal document.They are drawing up a set of proposals.The Colonel drew himself up to his full height and demanded an apology. They saw the driver stop his car in front of the bank.(改为被动语态) 11.29 The sudden appearence of the boy directly in front of the car caused the driver to __ short.The sudden appearence of the boy directly in front of the carcaused the driver to __ short.A.set up B.shut up C.catch up D.pull up 例6看不懂 高数题,这（4）（5）怎么理解呢,看不懂, 高数,大学高数,我连题意都看不懂,题中的t到底如何理解?画线部分看不懂,如何得到的高数,大学高数,我连题意都看不懂,题中的t到底如何理解?画线部分看不懂,如何得到的?最好写在纸上,大半 高等代数：看不懂它怎么就知道是单根了 找规律填数, 设集合A={x|x+4x=0},B={x|x2+2(m+1)x+m2-1=0},(1)A交B=B,求m的值设集合A={x|x+4x=0},B={x|x2+2(m+1)x+m2-1=0},(1)A交B=B,求m的值(2)若A并B=B,求m的值(注：x2表示x的2次方) 望会解者半小时之内尽快解答问题, 已知集合A=｛x|x^2+4x=o｝B=｛x|x^2+4x+a=0｝1.如果A并B=B,求a的值.2.如果A交B=B,求a的值. 羊鼠是什么 羊抗鼠IgG为什么能结合mIgM 二元函数可导与极限的关系,最好有实例, what was the name of the paly what was the name of yourfirst teacher? 以高糖培养酵母菌,其培养基类型为?答案是选择培养基,我需要个解释什么原理,高糖什么特性?高糖 DMEM 我终于发现了惠普名字的由来.可以说 i've finally found that what the original name of HP is . What was the original form of modern football 尽量在150字左右 为什么在培养酵母菌时,培养基会被污染 小鼠抗人IGG的分子量是多少 生物素化羊抗小鼠IgG工作原理免疫组化里使用哒~ 给我讲一下弓形虫抗原,羊抗人 IgG Here are some ways for us to be good at the four abilities of English什么意思 All of us are good at English 否定句 ___ ___ ___ are good at English Some good ways of improving English are_____(提到) 已知集合A={x|x2},B={x|4x+p My parents usually ___ at home on Sunday ..A stay B stays C staies D not stay