A. the constriction on its stem
B. the grade of mercury used in it
C. its long stem
D. its wide range of temperatures
Correct Answer:
Option A – the constriction on its stem
A. the constriction on its stem
B. the grade of mercury used in it
C. its long stem
D. its wide range of temperatures
Correct Answer:
Option A – the constriction on its stem
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