问题
单项选择题
下列选项中，对安全阀结构描述正确的是（）。
A、出口通径和入口通径尺寸相同
B、出口连接法兰和入口连接法兰压力等级相同
C、杠杆重锤式安全阀的载荷不随开启高度而变化
D、弹簧式安全阀的载荷不随开启高度而变化
答案
参考答案：C
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下列选项中，对安全阀结构描述正确的是（）。
A、出口通径和入口通径尺寸相同
B、出口连接法兰和入口连接法兰压力等级相同
C、杠杆重锤式安全阀的载荷不随开启高度而变化
D、弹簧式安全阀的载荷不随开启高度而变化
参考答案：C
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