关于霍乱，哪项是错误的（） A.潜伏期短者数小时，最长可达5天 B.呕吐多为喷射性

下列程序段的执行结果为 【13】 。
K=0
For J=1 To 2
ForI=1 To 3
K=I+1
Next I
For I=1 To 7
K=K+1
Next I
Next J
Print K

湿邪致病可以出现的症状是（）

A.牙龈肿痛

B.皮肤发斑

C.下肢水肿

D.各种出血

E.高热面赤

Without the invention of the computer, much of today's advanced technology _______.[ ]

A. will not have been achieved    

B. would not have been achieved

C. have not been achieved        

D. had not been achieved

电控发动机燃油消耗异常故障的常见原因有哪些？

国标中食物中毒的诊断标准是

A．GB/T4789-2003

B．GB/T4789-2004

C．GB/T5009-2004

D．GB/T5007-2004

E．GB14938-1994