下列对化学反应速度没有影响的是()
A.光线
B.介质的pH值
C.药物的浓度
D.温度
E.以上均非
参考答案:E
He ______more fruit and vegetables instead of meat. [ ]
A. need to eat
B. needs to eat
C. need eating
D. need to be eaten
诊断胆囊结石症的辅助检查方法,应首选()
A.CT
B.经皮经肝胆道造影(PTC.
C.B超
D.内镜逆行性胰胆管造影(ERCP)
E.静脉胆道造影