心肺复苏(CPR)时按压/通气比为()
A.10:1
B.5:1
C.30:2
D.15:1
E.10:2
参考答案:C
_____these interruptions, the meeting would have finished earlier.[ ]
A. Except for
B. But for
C. In addition
D. Other than
土壤中放线菌数量()于细菌,它们以()缠绕于有机物或土粒表面,并伸展于()中。