皮皮学，免费搜题
登录
搜题
【单选题】
胃底腺壁细胞合成盐酸的部位是A.
滑面内质网
B.
粗面内质网
C.
复合体
D.
细胞内分泌小管
E.
微管泡系统
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】Types of clinical research include:
A.
Epidemiology, which improves the understanding of a disease by studying patterns, causes, and effects of health and disease in specific groups.
B.
Behavioral, which improves the understanding of human behavior and how it relates to health and disease.
C.
Health services, which looks at how people access health care providers and health care services, how much care costs, and what happens to patients as a result of this care.
D.
Clinical trials, which evaluate the effects of an intervention on health outcomes.
【简答题】简述美国的电子商务立法的情况