[名词解释] 主管机关

Mr.Jones was tired，he will（）over his duty of look out to another sailor. ["take","think","hand","get"] Every precaution must be taken to avoid （）. ["sparking being taking place","to spark taking place","sparking to be taken place","sparking taking place"] 《零售商品称重计量监督规定》的调整范围是（）的销售和对其进行计量监督。 ["食品","化妆品","金银饰品","种子"] 讲求效益原则就是通过竞争达到一致，通过竞争形式的合作达到互利，通过竞争从对方承诺中获得自己尽可能多的利益。 以下哪种塔型适合在山顶建设（）。 ["三管塔","灯杆景观塔","仿生树","插接式单管塔"] 主管机关