A.10mm Hg B. 10^-2mmHg C. l0^-6 mmHg D. 10^-9mmHg. « Previous Next »
Home DG Shipping exit exam 111. In a vacuum circuit breaker, the vacuum is of the order of A.10mm Hg B. 10^-2mmHg C. l0^-6 mmHg D. 10^-9mmHg. « Previous Next »
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