油井水泥
参考答案:适用于油气井或水井固井的水泥或水泥与其它材料的任何混合物。
I’m sure your suggestions will _____ the problem.
A.contribute to solving
B.contribute to solve
C.be contributed to solve
D.be contributed to solving
强握反射属于()
A.深反射
B.浅反射
C.病理反射
D.自主神经反射
E.正常反射