尘肺按病因分类错误的是()
A.矽肺
B.棉尘肺
C.石棉肺
D.煤矽肺
E.煤肺
参考答案:B
腕管综合征主要影响的神经是()
A.C2~3
B.C5~T1脊神经前支
C.C6~T1
D.C5~8
E.C8、T1
— Are these your books?
—_____.[ ]
A. Yes, they aren't.
B. Yes, these are.
C. No, they aren't.