当工件以窄长的平面为定位基准时,可选择( )个支承钉定位。
A.1
B.2
C.3
参考答案:B
-______fresh vegetables!
- I myself grow them. Go to the balcony, and you can see more.
A.How
B.What
C.How a
D.What a
五脏中“以升为健”的是()
A.心
B.肝
C.脾
D.肾
E.肺