题目9单选题
已知向量<img src="https://tihai-oss-cloud.itihey.com/img/d75d8c1a49dcf91dfe9bd4e87a9e9fa7.png">,<img src="https://tihai-oss-cloud.itihey.com/img/05ea98f65845a658d79ec5d8ca76a823.png">,<img src="https://tihai-oss-cloud.itihey.com/img/01d8316478f6af792082c69f9fd4cc5a.png">,则向量<img src="https://tihai-oss-cloud.itihey.com/img/15a26ae70e390914d9f0ec851c552dcf.png">在<img src="https://tihai-oss-cloud.itihey.com/img/0bf8aba2c13f53b469186ee4274cb10b.png">轴上的投影为( )A. <img src="https://tihai-oss-cloud.itihey.com/img/4453a17cbfbcf8ffbcf8ee14cdf31105.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/017597fbc62ad27748416377cafb7586.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/a860070bfe6d3131f869c8d478cbc617.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/554b99c30e836a51ec2ad462fb7ab764.png">