中压汽轮机新蒸汽压力为()。
A.1.18~1.47MPa
B.1.96~3.96MPa
C.5.58~9.80MPa
D.11.77~13.73MPa
参考答案:B
For Chinese,2008 is ______special year, ______ year when the 29th Olympics were held in China for the first time and ______ one that saw so many natural disasters.
A.a, the, the
B.the, a, the
C.a, the,不填
D.a, a,不填
男性,45岁,右侧背痛1年,右下肢进行性无力10个月,左下肢麻木9个月、检查:右下肢肌力3级,腱反射亢进,Babinski征(+)、右下肢位置觉和音叉觉明显减退、左侧脐水平以下痛觉明显减退,最可能的诊断是()
A.腰椎间盘突出
B.脊髓空洞症
C.脊髓髓内肿瘤
D.脊髓髓外肿瘤
E.运动神经元病