题海让大学四年没有难题
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单选题 设曲线为圆周,则的值为( )

A.

B.

C.

D.

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时间：2026-05-31 09:29:26

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题目2
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题目7
单选题
设曲线<img src="https://tihai-oss-cloud.itihey.com/img/4495dd05eb09d87a896800d41913f822.png">为连接<img src="https://tihai-oss-cloud.itihey.com/img/89a15ce136a836d18e1f89ff2e8f094e.png">与<img src="https://tihai-oss-cloud.itihey.com/img/c402ae0b4080848474b1d624a36e2d9f.png">的直线段,计算 <img src="https://tihai-oss-cloud.itihey.com/img/94700b6bb752f0cda70a63542b698057.png">,其值为( )
A. <img src="https://tihai-oss-cloud.itihey.com/img/8245d25379b2193d5dcf499d99187a7c.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/95ada378a5db7c4e3a2db1708766fefa.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/f874967b7ad7bb0099642865ffe63c2a.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/ab24c00bb67ee2811a65ad5016d72be5.png">
题目8
单选题
设曲线<img src="https://tihai-oss-cloud.itihey.com/img/4495dd05eb09d87a896800d41913f822.png">为圆周<img src="https://tihai-oss-cloud.itihey.com/img/16017719d5f758ded7dc490dc4925a8a.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/387be9b7ccdf71d17c439115dae822f2.png">的值为( )
A. <img src="https://tihai-oss-cloud.itihey.com/img/c5450d131f0dd9788b455afe9993dff3.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/5e9a373670e808fd920eb7b258635411.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ee01deea9f314a5bf344dad099634838.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/95ada378a5db7c4e3a2db1708766fefa.png">
题目9
单选题
设曲线<img src="https://tihai-oss-cloud.itihey.com/img/4495dd05eb09d87a896800d41913f822.png">为抛物线<img src="https://tihai-oss-cloud.itihey.com/img/39857f4bb0dd9e9f6936c7570b726665.png">从<img src="https://tihai-oss-cloud.itihey.com/img/678ecdd38ef0cf3914f713c45a19a0e8.png">到点<img src="https://tihai-oss-cloud.itihey.com/img/a0e821ef13979bb8b02feb8804208db2.png">的一段弧,则<img src="https://tihai-oss-cloud.itihey.com/img/437693fe3e2e486ddceeea8178fe83ce.png">的值为( )
A. <img src="https://tihai-oss-cloud.itihey.com/img/bed3937a6173c1aa12dc4c6210c851a0.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/5b964426cfe5e1d2faa747916757c218.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/d7132c665df9b51cb653b284a5656df3.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/3566028865309768796d72c4d9fa0305.png">
题目10
单选题
设曲线<img src="https://tihai-oss-cloud.itihey.com/img/4495dd05eb09d87a896800d41913f822.png">为圆周<img src="https://tihai-oss-cloud.itihey.com/img/0e15159f98ea0bb77298ad5677d52ba0.png">在第一象限的部分,则<img src="https://tihai-oss-cloud.itihey.com/img/a0221e288e0650572144b55f340eaae6.png">的值为( )
A. <img src="https://tihai-oss-cloud.itihey.com/img/ebc24af5f4040e99303fa875d6041edf.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/9904acc0578432d6cb5b75439a1acf33.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/7b1d051148665fbd67892defef036b33.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/a6072c939ba9c33fcb015b61ec218963.png">
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