A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently chargedIt is generally located in the（）.<br>A:high pressure liquid line<br>B:low pressure liquid line<br>C:high pressure vapor line<br>D:low pressure vapor line

A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently chargedIt is generally located in the（）.
A:high pressure liquid line
B:low pressure liquid line
C:high pressure vapor line
D:low pressure vapor line

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