A-A+
The water level showing in a boiler water gaug
问题详情
The water level showing in a boiler water gauge glass is usually () duringworking.
A.higher than the actual drum water level
B.equal to the actual drum water level
C.increasing due to steam condensation in the glass
D.lower than actual drum wafer level
参考答案
正确答案:D
解析:水位表上端通汽下端通水,温度不及炉内的高;炉内的炉水是水和汽泡的混合物,故其水位要高些。
译文:锅炉运行期间,水位计显示的水位比炉内的实际水位低。