Questions 1 and 2 are based on the news report you have just heard。A.The International Lab

A.平稳AR(2)

B.平稳AR(1)

C.MA(1)

D.平稳ARMA(1,2)

A.平稳AR(2)

B.平稳AR(1)

C.MA(1)

D.平稳ARMA(1,2)

(1)a_r不能由向量组α₁，α₂，···α_r-1线性表示;

(2)a_r能由α₁，α₂，···α_r-1，β线性表示。

A.1/64

B.1/16

C.1/8

D.1/4

E.1/2

A.1/64

B.1/16

C.1/8

D.1/4

E.1/2

A.1/64

B.1/16

C.1/8

D.1/4

E.1/2

A.2倍

B.1/2

C.3倍

D.1/3

向量组线性无关的充要条件是α₁，α₂，···，α_r线性无关。

A.Ar

B.CO2

C.Ar+(1%-2%)CO2

D.Ar+5%CO2+2%O2

A.1/3

B.1/2

C.1/4

D.2/3

A.1/3

B.1/2

C.1/4

D.2/3