采集脑脊液标本不能分离的病毒是()
A.柯萨奇病毒
B.肝炎病毒
C.肠道病毒
D.ECHO病毒
E.腮腺炎病毒
参考答案:B
______ healthy, with easy access to affordable medical care, is still a dream for many people, with
medicine price ______ sharply.[ ]
A. Keeping; rise
B. Keeping; rising
C. To keep; risen
D. Having kept; to rise
如图,A.B两点表示一定质量的某种理想气体的两个状态,当气体自状态A变化到状态B时( )
A.体积必然变大
B.有可能经过体积减小的过程
C.外界必然对气体做功
D.气体必然从外界吸热