A.4倍
B.3倍
C.2倍
D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍
[单选题]A.4倍B.3倍C.2倍D.1倍