某游泳池的横截面如图所示，用一水管向池内持续注水，若单位时间内注入的水量保持不变，则在注水过程中，下列图象能反映深水区水深h与注水时间t关系的是（Ａ）（Ｂ）（Ｃ）（Ｄ）-八年级数学

更多内容推荐

• 在实验课上，小亮利用同一块木板测得小车从不同高度（h）与下滑的时间（t）的关系如下表：下列结论错误的是（）[]A．当h=40时，t约2.66秒B．随高度增加，下滑时间越来越短C．估计当h=-七年级数学
• 下列图形中的图象不表示y是x的函数的是（）A．B．C．D．-数学
• 下图表示一辆汽车行驶的速度和时间的图象，你能用语言描述汽车的行驶情况吗？（）。-七年级数学
• 如图，反映了小明从家到超市的时间与距离之间关系的一幅图，（1）图中反映了哪两个变量之间的关系？超市离家多远？（2）小明到达超市用了多少时间？小明往返花了多少时间？（3）小明离-七年级数学
• 溶液的酸碱度由pH值确定，当pH＞7时，溶液呈碱性；当pH＜7时，溶液呈酸性。若将给定的NaOH溶液加水稀释，那么在下列图像中，能反映NaOH溶液的pH值与所加水的体积（V）的变化关系-九年级数学
• 下面的图象记录了某地1月份某天的温度随时间变化的情况，请你仔细观察图象后回答下面的问题．（1）20时的温度是（）℃，温度是0℃的时刻是（）时和（）时，最暖和的时刻是（）时，温度在﹣-八年级数学
• 某学校计划租用6辆客车送一批师生参加一年一度的哈尔滨冰雕节，感受冰雕艺术的魅力．现有甲、乙两种客车，它们的载客量和租金如下表．设租用甲种客车x辆，租车总费用为y元．（1）-七年级数学
• 一辆汽车油箱内有油48L，从某地出发，每行1km耗油0.6L，如果设剩下油量为y（L），行驶的路程为x（km）。（1）上述的哪些量发生了变化？自变量是什么？因变量是什么？（2）写出y与x的关-七年级数
• 在下表中，设x表示乘公共汽车的站数，y表示应付的票价（元）x（站）12345678910y（元）1112233344根据此表，下列说法正确的是（）A．y是x的函数B．y不是x的函数C．x是y的函数D．
• 火车以40千米/时的速度行驶，它走过的路程s（千米）与时间t（小时）之间的关系式是()，其中自变量是()，因变量是()．-七年级数学
• 某城市出租车收费按路程计算，3千米之内（包括3千米）收费6元，超过3千米每增加1千米加收1.6元，则车费y（元）与路程x（千米）之间的函数关系式为______．-数学
• 表示两个变量之间的关系有（）种，分别是（）。-七年级数学
• 某公司决定投资新项目，通过考察确定有6个项目可供选择，各项目所需资金及预计年利润如下表：（1）上表反映了哪两个变量之间的关系？哪个量是自变量？（2）如果投资项目3，那么其年-八年级数学
• 一辆汽车由韶关匀速驶往广州，下列图象中大致能反映汽车距离广州的路程s（千米）和行驶时间t（小时）的关系的是[]A.B.C.D.-七年级数学
• 下列：①y=x2；②y=2x+1；③y2=2x（x≥0）；④y=±x（x≥0），具有函数关系（自变量为x）的是______．-数学
• 小红帮助妈妈预算家庭4月份电费开支情况，下表是小红家4月份连续8日早晨电表显示的读数：（1）表中反映的自变量是（），因变量是（）；（2）估计小红家4月份的用电量是（）；（3）若每度电-七年级数学
• 在等式①x=|y|；②y=|x|；③x2+y2-1=0；④5x-2y=0；⑤y=x，y是x的函数的有（）A．.2个B．.3个C．4个D．.5个-数学
• 函数y=-x2-4x+5（t≤x≤t+1）的最大值关于t的表达式为ymax=______．-数学
• 如果对写文章、出版图书所获稿费的纳税计算方法是A，y（x）=(x-800)•20%•(1-30%)，x≤4000x•(1-20%)•20%•(1-30%)，x＞4000其中y（x）表示稿费为x元应缴纳
• Miss Green is popular with her students as she always tries to make them _________ in her classes.A．
• The Chinese river dolphin is one of the First-Grade State Protection animals, a (an) mammal with its
• Nowadays, _______ cars are more and more popular.A．electronicB．electricC．electricalD．electricity-高三英
• The result is not very important to us, but if we do win, then so much ________.A．the best B．bestC．b
• Nobody got a bit ________ during the whole of so ________ a game.A．exciting; boringB．exciting; bored
• The new secretary is and therefore the manager is satisfied with her work. [ ]A. effectiveB. efficie
• A(n)______ picture of the Middle Ages was full of religious symbols. A．abstractB．actualC．typicalD．s
• you put your heart into English, you’ll be interested in it.A．The more; the moreB．The more close; th
• Anyone who has spent time with children is aware of the difference in the way the boys and girls res
• _______ more to be pitied than blamed．A．Uneducated areB．Uneducated isC．The uneducated areD．The unedu
• My grandfather _____ smoking, but only smokes when he is free. [ ]A. is proud of B. is fond of C. is
• The scientist corresponds with colleagues in order to learn about matters ______ to her own research
• Your job here is only________, for you will be removed from it when we have a proper post for you.A．
• -How do you find the Chinese Character Dictation Competition on CCTV?. - Great! It has brought us a
• Those who are _____ for small gains can never make great achievements. [ ]A. eager B. greedy C. gene
• He spent _____ money on books and _____ his books are about space and satellite. [ ]A. a great deal
• They have aquarrel and John stonned out.[ ]A. violent B. cruel C. strong D. harmful-高一英语
• In that school, English is compulsory for all students, but French and Russian are _______.[ ]A. spe
• She is ____ you could ever meet. [ ]A. as a gentle girl as B. as gently a girl as C. a girl as gentl
• Mistakes don't just happen; they occur for a reason. Find out the reason, and then make the mis
• He likes the novel in ____, for his wife wrote it when she was alive. [ ]A. particular B. special C.
• Not all of thesefairies are friendly, people love characters that appear in Disney films, but in som
• The volunteers will do _____to help those injured in the earthquake. [ ]A. everything possible human
• China is always carrying out foreign policies that are ______ enough to fit in with varieties of com
• 短文改错。 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。 增加-高二英语
• Air is ________ and of no smell but we can feel its motion when there is a wind.[ ]A. unavoidable B.
• He tried to be ______, but his trembling hands gave him away.[ ]A. calmB. still C. silent D. quiet-高
• Thechildrenaretaughttobe_______ofthedangeroftakingdrugs. [ ]A.proudB.fondC.ashamedD.aware -高一英语
• People were ______ to see the teachers put on the play in such a professional way. [ ]A. shocked B.
• After six months training, the whole team is in ______ form. [ ]A. beautiful B. colorful C. strong D
• His wife is very _____ about dress and she is strongly _____wearing ______ clothes on formal occasio