可承担工程造价1000万元及以下各类地基与基础工程的施工的专业承包企业的资质为( )。
A.特级
B.一级
C.二级
D.三级
参考答案:C
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
以高分子有机化合物为主体材料的灌浆方法称为( )。
A.固结灌浆 B.帷幕灌浆C.接触灌浆 D.化学灌浆