第20题: [单项选择]压力容器压力产生于容器内的原因有()。 A. 物质状态改变 B. 物质受热 C. 物质发生化学反应 D. D、A和C 参考答案:D
第21题: [单项选择]Huskless, milled rice ______. A. was cheaper than unmilled rice B. was less nourishing than unmilled rice C. was more nourishing than unmilled rice D. cured beri-beri 参考答案:B 答案解析:[分析] 判断推理题。从文章最后一段第二句可知,the lack of Some ingredient in the husk might be the cause of the disease.即缺
第22题: [单项选择]培训教材选用依据是()。 A. 受训者智商 B. 岗位培训目标 C. 培训层次水平 D. 受训者情商 参考答案:C