<p>计算<img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/60/6e/606e742440bc289bf79d688b9eb29a3b.jpg" style="width: 100%;height: auto;">,其中Ω为z2=x2+y2，z=1所围成的立体，则正确的解法是() <img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/e0/4e/e04e2900843b9b71b9fa654d52ac591f.jpg" style="width: 100%;height: auto;"></p>