题目: 脊柱硬膜外脓肿的MRI诊断依据是()A.T及质子密度像,感染处硬膜外出现较高信号影B.矢状位质子密度像,硬膜外出现条状高信号影C.质子密度及T像可显示脓肿壁呈低信号影D.硬膜囊和脊髓受压移位E.上述各项全部不正确 答案: 参考答案:E
题型:选择题 Which do you enjoy ___ your spare time, reading or playing chess?A.to spendB.spendC.spendingD.being spent 查看答案
题型:简答题 别人借了你家的贵重物品不还,你应该怎么做? ________________________________________________________________________________ 查看答案