每次变换档位时,都必须经过()。变换档位通常应逐级进行,不应超级换档。
参考答案:空档位置
一Must I go and do it now?
—NO, you ______. We still have two more days. [ ]
A. shouldn't
B. can't
C. needn't
D. won't
男性,38岁,肝硬化病史6年,因上消化道出血不止行TIPS治疗后,患者出现睡眠障碍,此时较没有意义的检查方法是()
A.脑电
B.血氨
C.诱发电位
D.脑CT
E.智力测验