Where do most environmental endocrine disruptors accumulate in the body？ Moreover, released during stress, pregnancy, and malnutrition（）
A. Skeleton
B. Lipid
C. Blood
D. Muscle
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What are the ways of environmental hazards entering the human body（）
A. Skin
B. Inhalation
C. Injection
D. Oral
Ovulation occurs on the 14th day of the menstrual cycle（）
低碳钢拉伸实验时测量试样的数据不包括（）
A. 直径d0
B. 原始标距l0
C. 断后最小截面d1
D. 断后长度l1
How many sperm does an adult man produce per day（）
A. 100~200 million
B. 200~300 million
C. 20~30 thousand
D. 10~20 thousand
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