数列{a n }各项均为正数,S n 为其前n项的和.对于n∈N * ,总有a n ,S n ,a n 2 成等差数列. (1)求数列{a n }的通项a n ; (2)设数列 { 1 a n } 的前n项和为T n ,数列{T n }的前n项和为R n ,求证:当n≥2,n∈N时,R n-1 =n(T n -1); (3)若函数 f(x)= 1 (p-1)? 3 qx +1 的定义域为R n ,并且 lim n→∞ f( a n )=0(n∈ N * ) ,求证p+q>1.
【单选题】The Declaration of Security is a checklist,to be checked by the Ship Security Officer in co-operation with the local Port Facility Security Officer
A.
Declaration of Security is to be checked by SSO only
B.
Declaration of Security is to be checked by PFSO only
C.
Declaration of Security is to be checked jointly by SSO and PFSO
D.
Declaration of Security is to be checked by SSO and PFSO respectively
【单选题】A security level,for which appropriate additional protective security measures shall be maintained for a period of time as a result of heightened risk of a security incident is defined as___.
【单选题】___________ means the person on board the ship, accountable to the master, designated by the company as responsible for the security of the ship, including implementation and maintenance of the ship s...