等比数列{an}的各项均为正数,且a5a6+a4a7=18,则log3a1+log3a2+…log3a10=[ ]
A.12
B.10
C.8
D.2+log35
答案:B
The last shot of an anchor cable is usually painted().
A.white
B.international orange
C.yellow
D.red
甲施工单位的答复是否妥当,为什么总监理工程师签发的整改通知是否妥当,为什么