启动机的()在电机转动同时驱动齿轮与发动机的飞轮齿环,将启动机的转矩传递给发动机曲轴 发布时间:2020-02-28 10:12 │ 来源:www.tikuol.com 题型:单项选择题 问题: 启动机的()在电机转动同时驱动齿轮与发动机的飞轮齿环,将启动机的转矩传递给发动机曲轴,使发动机顺利启动。A.传动机构B.控制机构C.启动机构D.电动机
题型:单项选择题 The nurse preparing to give a child an intramuscular injection chooses to give the injection into the gluteal muscle. The site is acceptable because which of the following reasonsA. The child has been walking for 1 year.B. The child has small deltoid muscles.C. The child is older than 2 years.D. The child weighs more than 25 pounds. 查看答案
题型:单项选择题 两偏振片堆叠在一起,一束自然光垂直入射其上时没有光线通过。当其中一偏振片慢慢转动180°时,透射光强度发生的变化是()。A.光强单调增加B.光强先增加,后又减小至零C.光强先增加,后又减,再增加D.光强先增加,后又减,再增加,最后减小为零 查看答案