对早期诊断RA较有意义的抗体是()
A.HLA-B27
B.高滴度抗RNP抗体
C.抗角蛋白抗体
D.抗JO-2抗体
E.抗dsDNA抗体
参考答案:C
You can imagine what great trouble we had ______ the new school.
A.setting up
B.to set up
C.set up
D.to setting up
输送带在皮带机中的作用为承载和()。