氯的杀生能力受水的()影响较大
A.pH值
B.碱度
C.温度
D.含盐量
参考答案:B
---You’d better not eat too much salt. It’s bad for your health.
----_________.
A.Not at all.
B.You’re welcome.
C.I’m thirsty now.
D.Thanks for your advice.
什么叫砂型的透气性?如何测定砂型的透气性?