肾细胞癌MRI增强扫描的强化特点是()
A.延迟期强化常不及肾实质
B.可为不规则边缘强化
C.可为不均匀斑片状强化
D.少数可无明显增强
E.以上均是
参考答案:E
燃气管道和设备防腐层在工艺上一般由()组成。
(A)底漆和面漆
(B)底漆
(C)面漆
(D)不确定
–Jane called to say that she couldn’t come to your birthday party this Saturday night.
–______ David has been expecting to see her for ages.
A.What a shame!
B.How could she do that?
C.That’s terrible!
D.I don’t care.