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qualitycontrol-120
The STUDENT RESPONSIBILITIES section mentions that students must NOT TALK during the practical. Additionally, when should students CLOSE GAS TAPS and DISCONNECT ELECTRICAL CONNECTIONS?
A. Immediately before beginning the practical experiment
B. Only when leaving the laboratory for breaks
C. AT THE END OF THE PRACTICAL — students should close gas taps, disconnect electrical connections, and place appropriate covers on instruments
D. Gas taps and electrical connections should only be managed by laboratory supervisors
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