蓄电池制造工,男,41岁,从事工作以来出现头痛、头晕、肌肉关节酸痛,继而发展到四肢末端呈手套和袜套样的感觉减退,其原因可能是()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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