题干

甲、乙、丙三根用相同材料制成的均匀合金丝,甲、乙的粗细相同,但甲较长;乙、丙的长度相同,但丙较粗,则这三根电阻丝的电阻值最大的是____ ,最小的是____ .

上一题 下一题 0.0难度 选择题 更新时间:2018-12-14 10:38:11

答案(点此获取答案解析)

甲,丙

同类题3

阅读下面文章,请分别回答文后问题。
        突然,客人惊奇地屏住了呼吸,只见面前的小个子那对浓似灌木丛的眉毛下面,一对灰色的眼睛射出一道黑豹似的目光,虽然每个见过托尔斯泰的人都谈过这种犀利目光,但再好的图片都没法加以反映。这道目光就像一把锃亮的钢刀刺了过来,又稳又准,击中要害。令你无法动弹,无法躲避。仿佛被催眠术控制住了,你只好乖乖地忍受这种目光的探寻,任何掩饰都抵挡不住。它像枪弹穿透了伪装的甲胄,它像金刚刀切开了玻璃。在这种入木三分的审视之下,谁都没法遮遮掩掩。——对此,屠格涅夫和高尔基等上百个人都作过无可置疑的描述。
        这种穿透心灵的审视仅仅持续了一秒钟,接着便刀剑入鞘,代之以柔和的目光与和蔼的笑容。虽然嘴角紧闭,没有变化,但那对眼睛却能满含粲然笑意,犹如神奇的星光。而在优美动人的音乐影响下,它们可以像村妇那样热泪涟涟。精神上感到满足自在时,它们可以闪闪发光,转眼又因忧郁而黯然失色,罩上阴云,顿生凄凉,显得麻木不仁,神秘莫测。它们可以变得冷酷锐利,可以像手术刀、像X射线那样揭开隐藏的秘密,不一会儿意趣盎然地涌出好奇的神色。这是出现在人类面部最富感情的一对眼睛,可以抒发各种各样的感情。高尔基对它们恰如其分的描述,说出了我们的心里话:“托尔斯泰这对眼睛里有一百只眼珠。”

同类题5

阅读理解

    Do you still remember your favorite poem from high school or some other important periods in your life?Why is it that decades later it still stands out in your mind?Probably the main reason is that some aspects of that poem resonates(引起共鸣)with you.In the same way,you too as a school leader can touch the hearts of your staff and students.

    Poetry allows us to experience strong spiritual connections to things around us and to the past.Thus,it can inspire whatever and whomever it touches.The power that poetry has displayed over time and across cultures actually satisfies this common need of the human heart and soul.

    As one of the oldest art forms,poetry has successfully connected various strands of humanity(人性)from one generation to another.Referring to poetry,Hillyer makes a simple yet meaningful statement,“With this key mankind unlocked his heart.”

    School leaders can find and make use of the value of poetry for themselves,their students and their staff members.Beyond the simple use of poetry,techniques of poetry such as metaphors,repetitions and imagery can be used to take advantage of the power of language to transform communication,create meaning and a culture of care and attention.

    Since schools are mainly about people and relationship,school leaders,like poets,are required to inspire and encourage the human heart.The use of poetry—or even of some techniques of poetry—in school leadership not only helps to improve communication,but also serves to meet the human need for inspiration.