以下哪种属于农业生产活动?[ ]
A、上山打野兔
B、野外采蘑菇
C、水塘养鱼
D、用棉花加工成棉布
答案:C
Five workers _____ the mine disaster. After the injured _____ to the hospital, doctors and nurses immediately got down to saving their lives.
A.was survived; rushed
B.survived from; were rushed
C.survived; was rushed
D.survived; were rushed
对薄壁容器、筒形制品﹑大型罩壳以及不允许有推杆痕迹的塑件,可采用推件板推出机构,这种机构不需另设(),合模时即可复位。
A.复位杆
B.推件杆
C.拉料杆