尿蛋白阳性是指患者24小时尿蛋白量应大于的数值是（）
A.50mg
B.100mg
C.150mg
D.200mg
E.250mg
参考答案：C
露天采矿的一般工艺流程为？
Mrs. Cray, an African American, is admitted to the hospital after sustaining a hip fracture. She is 5 ft. , 4 inches tall and weighs 96 lbs. She has five children and has used estrogen replacement therapies for 10 years. She told the nurse that she "just stepped forward and fell. " The results of her bone density tests indicate she has osteoporosis. Which of the following is the greatest risk factor for osteoporosis for this woman()
A. Her long-term use of estrogen.
B. Her weight.
C. Her family.
D. Her race.
