通态平均电压值是衡量晶闸管质量好坏的指标之一,其值()。
A、越大越好
B、越小越好
C、适中为好
D、为0最好
参考答案:A
Look and write.(看图片,填空)
Mary is a nice girl. She is eight years old. She has big eyes. Mary' 1. ________ is green.
And her 2.________ are black.
患者女,58岁,因“洗衣时突发右侧肢体活动障碍40min”来诊。查体:意识清楚,混合性失语,右侧中枢性面舌瘫,右侧偏瘫,右侧偏身痛觉减退。颅脑CT:未见异常。
最可能的病因是()
A.脑动脉硬化
B.心房颤动
C.高血压
D.糖尿病
E.高脂血症