Which of the following belongs to precipitating factors（）
A. Injury
B. Poisoning
C. Infection
D. Climate changing
E. Depression
查看答案
The best way to acquire accurate medical history during an interview is（）
A. by listening attentively
B. by guiding the patient
C. by questioning continuously
D. by health promotion
E. by using medical terminology
Which of the following is the symptom but not sign of the patient（）
A. Enlarged spleen
B. Abdominal tenderness
C. Systolic murmur
D. Palpitation
Enlarged liver
饲料报酬、饲料效率等综合指标可以用于饲料营养价值的评定，一下关于综合指标的说法错误的是（）
A. 饲料报酬又叫作料肉比（FCR），FCR=（增重（产蛋量）（kg））/（饲料采食量（kg））
B. 猪的FCR值在3：1一下时为好，家禽的FCR值在2.5：1一下为好
C. 饲料效率（Feed conversion efficiency）=（增长量（产蛋量）（kg））/（采食量（kg））
D. 饲料效率与饲料报酬所反应的都是饲料对生长（产）性能的影响
Goods with many close substitutes tend to have（）
A. less elastic demands
B. more elastic demands
C. price elasticities of demand that are unit elastic
D. income elasticities of demand that are negative
微信支付 
支付宝支付