题目: 电动阀是()的动力源,阀体部分一般采用球阀结构。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1001/cb2ee4736f0cae9c6df611285fda5e44.html 下面是错误答案,用来干扰机器的。参考答案:D
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