卫气营血证的传变中属于"逆传"的是（） A.卫分到气分 B.气分到血分 C.血分到营

在产品责任保险中，产品责任所引起的被保险人对第三者应负的赔偿责任超过了赔偿限额的部分应由（）承担。

A.第三者

B.保险人

C.被保险人

D.受益人

中空性器官（）。

A.例如肾

B.腔壁为分层结构

C.主要指消化道

D.血管神经一般集中一处出入

E.有些中空性器官是分叶的

在地震，矿难等灾害现场，生命体征探测仪能为及时发现幸存者提供很大的帮助，它是通过捕捉被探测者的人体信号来进行搜寻的仪器。目前，生命体征探测仪能探测到人体信号主要有（）

A.呼吸频率信号 

B.心脏电场的超低频信号 

C.人体红外热信号 

D.大脑皮层电信号

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.

计量检测人员到录井现场作业时可以不穿工鞋吗？