The parents of a 4-year-old with sickle cell anemia tell the nurse that they would like to have other children, but they’re concerned about passing sickle cell anemia on to them. Which health care team member would be the most appropriate person for the nurse to refer them to ？（）

A．Clergy.

B．Social worker.

C．Certified nurse midwife.

D．Genetic counselor.

操作面校装检查时，应特别注意：（）.

A.舵面不能偏转，否则测量不准

B.舵面的移动范围应比操纵机构移动的范围大

C.操纵机构和舵面的运动要一致

D.操纵机构应锁定