Aboard a vessel, dividing the sum of the vertical moments by the total weight yields the vessel’s（）. ["height of the center of gravity A.LCG","vertical moment","righting moment","inclining moment"]
公共管理信息系统不包括（）。 ["搜集和输入相关的资料和数据","信息获取、输入、加工、存储、检索、传输等环节","输入为公共决策而准备的各种信息","经过一定的加工处理"]
气动仪表中，（）将测量参数与给定参数比较并进行处理，使被控参数按需要的规律变化。 ["变送器","比值器","调节器","转换器"]
以下哪一种情况不属于心理因素（） ["A型行为","抽烟喝酒","心理紧张","情绪障碍"]
钢按脱氧程度分为哪几类？
钢材硬度
