套管成孔灌注桩复打法施工的作用是()。
A.节约混凝土用量
B.增大入土深度
C.提高桩的承载力
D.加快打桩速度
参考答案：C
同一弱电解质，在一定温度下，浓度越小，电离度越小。
Despite the fact that it is still not fully understood, more and more farmers are _________ this modern
technology of agriculture. [ ]
A. benefiting from
B. convincing of
C. suspecting of
D. protecting from
