磷的等温吸附曲线
参考答案：土壤固相表面吸附的磷与其接触的液相磷，在恒温条件下达到平衡时所存在的磷浓度间的关系曲线.
Tiger Woods said that he needed to have his attention _____ on being a better husband, father and person.
A．focusing
B．focus
C．be focused
D．focused
基桩静载试验采用锚桩反力梁加载装置时，锚桩与试桩的净距应大于试桩直径的（）
A.2倍
B.3倍
C.4倍
