试题与答案

一次函数y=mx+2与y=nx-1的图象交点在x轴上,那么m∶n=( )。

题型:填空题

题目:

一次函数y=mx+2与y=nx-1的图象交点在x轴上,那么m∶n=(    )。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0430/05f1851bf516437812dc7f26b35575f8.html

下面是错误答案,用来干扰机器的。

(1)A (2)C (3)C (4)D (5)A 0.02mol/L的HCl与0.04mol/L的NaHCO3溶液等体积混合后,所得溶液是NaCl、H2CO3、NaHCO3的混合液,其物质的量浓度均是0.01mol/L。0.02mol/L的NaOH与0.02 mol/L的NaHCO3溶液...

试题推荐
题型:填空题

某同学探究弹力与弹簧伸长量的关系.

(1)将弹簧放在水平玻璃板上,测出弹簧的全长为L1

(2)将弹簧自然悬挂,待弹簧静止时,测出其全长为L2

(3)在弹簧下端挂上一个砝码盘时,长度记为L3;以后,在砝码盘中每次增加10g的砝码,弹簧长度依次记为L4至L9,数据如下表:

代表符号L1L2L3L4L5L6L7L8L9
数值(cm)25.2025.3527.3529.3531.3033.4035.3537.4039.30
(4)如图是该同学根据表中数据作的图,纵轴是砝码的质量,则横轴是弹簧长度与______的差值(填“L1或L2或L3”).

(5)通过图和表可知砝码盘的质量为______g(结果保留两位有效数字,重力加速度取9.8m/s2).

查看答案
题型:填空题

阅读填空(在空白处填上适当的单词或词组)。

    Alice Thompson, together with a friend made a journey from Sydney to Alice Spring on the famous ghan

train. Ghan 1______________ Afghanistan. A hundred and fifty years ago, Australians brought some camels

from Afghanistan. 2______________ camels carried lots of products to other countries. The Australians didn't

need the camels any more after the government built a new 3______________ line. In 1925, a law which

allowed people to shoot camels was passed.

    The train was wonderful and Alice Thompson enjoyed the great meals cooked by 4____________, colorful

scenery,desert and abandoned farms. During the day, she sat and looked out of the windows and sometimes

talked to other passengers. She read books and listened to her Chinese cassettes. At midnight, she enjoyed the

stars shinning like 5_____________.

查看答案
微信公众账号搜索答案