预防急性胰腺炎发生,有重要意义的措施是
A.积极治疗十二指肠疾病B.防治胆道疾病C.注意饮食卫生D.经常服用消化酶类药物E.经常服用抗生素
参考答案:B
It is not intelligence alone that brings success but also the _____ to succeed and the courage to believe in yourself.
A.drive
B.concern
C.contribution
D.authority
沙门菌属的变异性不包括
A.S-R变异B.O-H变异C.相位变异D.V-W变异E.基因重排