诊断急性链球菌感染后肾炎,关键血清学检查应包括()
A.血沉和抗核抗体
B.抗核抗体和肌酐
C.尿素氮和蛋白电泳
D.ASO和补体C3
E.C反应蛋白和免疫球蛋白
参考答案:D
拔出插头时,应该紧握插头,严禁拉扯插头的软线。
You are operating a lift boat.When beginning to jack down you should().
A.Jack down one leg at a time
B.Jack up first,then down
C.Undog doors to the engine room
D.Assemble all personnel on the main deck