马可波罗网(makepolo.com)提供供应中兴ZXJ10用户电缆BY1/BY2/BY3一年质保,产品详情:品牌:中兴、型号:ZXJ10、类别:程控数字、用途:企业用户、插槽数:100、电压:220V,更多产品详情就上马可波罗网!
Step by Step 3000. Book Four. Unit 3. Work and Workforce. Part 1. Warming up. A.Keywords. my job. Vocabulary. on top of, self-worth. Listen to three people talking about their jobs. Guess what job they each are engaged in and supply the corresponding key words. 1. Psychologist. May...
by+数量词。 1、表升降、增减的程度。如:by one-fifth/20 percent/￡3/two feet等。 With production up by 60%,the company has had another excellent year. 产量上升了百分之六十,这家公司今年的业绩极好。 The demand for organic food is increasing by about one third every year. 对绿色食品的需求...
QPlay儿童自行车1-3-6岁平衡车二合一儿童单车脚踏车12寸miniby宝石蓝 京东价 ￥降价通知 累计评价 0 促销 展开促销 配送至 --请选择-- 支持 选择规格 宝石蓝 玫瑰红 陶釉粉 沙岩色 牛油果绿 岩霜紫 选择自定义 12寸【身高建议75-105cm】 14寸【身高建议90-125cm】 ...
Step by Step 3000. Book two. Unit 3. All can succeed. Part 1. Warming up. A. Keywords. imagination, win, opportunity, risk, like, success, other people, abilities, hard work. Vocabulary. prosper, shed light onto, be blessed with, positive, critically, interact. In this part, you are...
核心知识:by的用法(二):1. by+反身代词表示(并举例):2. by+时间点表示(并举例):3. by+动作执行者表示(并举例):4.列举含有by的固定短语(并举例
已知两直线l1:ax-by+4=0,l2:(a-1)x+y+b=0.求分别满足下列条件的a,b的值.(1)直线l1过点(-3,-1),并且直线l1与l2垂直;(2)直线l1与直线l2平行,并且坐标原点到l1,l2的距离相等.
免费查询更多gfm-1021-dk6 a1.00(乙级)-1-带门镜-by3压花详细参数、实时报价、行情走势、优质商品批发/供应信息等,您还可以发布询价信息。
西门子7MF4033-3BY00-1BC6高精度差压变送器可以应用于具有化学和机械负载的工业领域。 10kHz 到1GHz 范围内的电磁兼容使DS III 压力变送器适用于高电磁辐射场合。符合“本安”和“隔爆”防爆要求的变送器可以安装在有潜在爆炸危险气氛 (1 区) 或0 区内。该变送器具有EC 型试验合格证书,并符合欧洲标准(ATEX...
[答案]解:由题意可知:把 X 3 1代入 4x-by=-2,得,34+b=-2,b=10,把 =5 x y=4代入 2x+5y=15,得 2+5×4=15,a=- 1,∴ 2005 a2004+= 2005 00 -1) +(0 × 10= 1+1=0.[考点]代数式求值,二元一次方程组的解[解析][分析]根据甲看错了方程①中的a,将甲得到的方程组的解代入方程...