【简答题】设数列{a n }是公差为d的等差数列,其前n项和为S n . (1)已知a 1 =1,d=2, (ⅰ)求当n∈N * 时, S n + n 的最小值; (ⅱ)当n∈N * 时,求证: 2 S 1 S 3 + 3 S 2 S 4 +…+ n+1 S n S n+2 < 5 16 ; (2)是否存在实数a 1 ,使得对任意n,关于m的不等式a m ≥n的最小解为3n-2?若存在,则求...
【简答题】SS4型电力机车采用了_____相控调压。
【单选题】Choose the BEST TERM to match the definition and translate the selected term into Chinese
A.
Adherend J. Hysteresis
D.
Stress relaxation M. Prepreg
E.
Plasticity N. Hybrid Composite
F.
Creep O. Filled Composite
G.
Elasticity P. Laminar Composite
H.
Viscoelasticity Q. Isomers
【单选题】Referring to the exhibit, you must move the match term above the reject term. Which command would accomplish this task?()
A.
set term match from policy reject
B.
up 1 copy policy-statement my-policy term match to term before-reject
C.
activate term match to policy
D.
insert term match before term reject
【单选题】A magneto is a technical term for( ).
C.
a part of an automobile engine
【多选题】汇总记账凭证账务处理程序的优点是( )。
【简答题】SS8型电力机车上有两台TZX8型_____电阻器。
【简答题】Choose the BEST TERM to match the definition and translate the selected term into Clunese. A) Ablation L) Nanocomposites B) Adhesion M) Nettingindex C) Cohesi...
【简答题】Choose the BEST TERM to match the definition and translate the selected term into Chinese (20pts). A) Atomic packing factor (APF) R) Long-range-order materials B) Characterization ...