One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； June 07
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Multiple-choice question: The normal replacement cycle for the explosion-proof membrane is once every six months; it should also be replaced if its rated burst pressure is exceeded without it bursting. The bottom of the explosion-proof film tends to self-polymerize; therefore, the self-polymerized material must be removed thoroughly when cleaning the tank. A、Half a year, self-aggregation B、One year, self-aggregation C、Half a year, scaling D、One year, scaling Answer: A、Half a year, self-aggregation
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