关于急性脊髓炎和脊髓压迫症的鉴别诊断,最有价值的是()
A.起病急缓
B.症状的轻重
C.有无脊髓休克
D.脑脊液的改变
E.腰椎穿刺时压颈试验是否通畅
参考答案:E
下列保鲜方法中哪项属于现代保鲜方法
①罐藏 ②脱水 ③糖渍 ④盐渍 ⑤晒干 ⑥添加防腐剂 ⑦真空包装[ ]
A.①②⑥⑦
B.④⑤⑥⑦
C.③④⑤⑥
D.①⑤⑥⑦
-What’s the matter with John? He has been sitting there for hours.
-A postcard from his father an attack of home-sickness in him.
A.took up
B.set off
C.brought in
D.built up