双扩试验平板法中，抗原含量较大，则夏应沉淀线应（）

A.靠近抗原孔

B.无沉淀线

C.在两孔中点

D.呈多条沉淀线

E.靠近抗体孔

A client who has sustained a head injury is to receive mannitol (Osmitrol) by IV push. In evaluating the effectiveness of the drug, the nurse should expect to find （）.

A．increased lung expansion.

B．decreased cerebral edema.

C．decreased cardiac workload.

D．increased cerebral circulation.