The main infection source of epidemic type B enecphalitis virus is（)A．patientB．health

The main infection source of epidemic type B enecphalitis virus is()

A．patient

B．health carrier

C．young pig

D．culicine

E．10use

请帮忙给出正确答案和分析，谢谢！

您可能感兴趣的试题

aware of／conscious of how the infection happens

答案解析
These low-budget animated films are the main source of______ of this independent studio.A．

答案解析
What is the conversation mainly about？A．Methods for finding appropriate sources for a proj

答案解析
The main sources of salt in our diet are______.A．home-made food and packaged foodB．restaur

答案解析
The high level of infection among women has been

答案解析
What is the conversation mainly about?A.Methods for finding appropriate sources for a proj

答案解析
The two main sources of stockholders equity are investments contributed by stockholders and net income retained in the business.()

答案解析