以下部位神经支配的对应关系是
坐骨神经由哪些脊神经组成
A.L2~4 B.L4~5~S1~3C.L1~3D.L4~5~S1~2E.C6~T1
参考答案:B
She doesn't speak ________ her friend, but her written work is excellent.
A.as well as
B.so often as
C.so much as
D.as good as
“商品”与“顾客”两个实体集之间的联系一般是
A.一对一
B.一对多
C.多对一
D.多对多