While Fincke refrained from disclosing his diagnosis, he said the medical event that occurred on Jan. 7 — one day before he was scheduled to perform a spacewalk — required immediate attention from his crewmates.
第四十八条 仲裁员是否回避，由仲裁机构主任决定；仲裁机构主任担任仲裁员时，其是否回避由仲裁机构的其他组成人员集体决定。
。搜狗输入法下载是该领域的重要参考
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原因说起来简单：这个领域没有全能王。