题目1单选题
设<img src="https://tihai-oss-cloud.itihey.com/img/315d1a81b92918c9ea079c65f78d2ba4.png">为取顺时针方向的圆周<img src="https://tihai-oss-cloud.itihey.com/img/b3c690f401bc63f5ff0572d0f722fccf.png">,将曲线积分<img src="https://tihai-oss-cloud.itihey.com/img/117333bc933fee08f2c8ab6b5bde1687.png">化为二重积分为( )A. <img src="https://tihai-oss-cloud.itihey.com/img/db5d61e2a07cfae2f5286cc6ba8c19e4.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/a19dc137da0ba0b5449f755fb1b6b2b8.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ea39fdb610a1012a28d1979f5f60d54b.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/828bfb51e6ecb2123ad0e5cdea275ede.png">