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【判断题】
投入产出表包括实物型和价值型，其中价值型应用最广泛。（ ）A.
正确
B.
错误
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举一反三
【单选题】. By the end of last year the railway_______.
A.
was being completed
B.
would be completed
C.
had been completed
D.
had completed
【单选题】By the end of last year, another new gymnasium _____ in Beijing.A．would be completedB．was being c
A.
16.By the end of last year, another new gymnasium _____ in Beijing. A．would be completed
B.
was being completed
C.
had been completed
D.
has been completed
【单选题】By the end of last term, I___ ten books.
A.
had finished reading
B.
have finish reading
C.
had finish to read
D.
finish read
【单选题】下列关于公钥密码体制说法不正确的是（）。
A.
公钥密码体制中仅根据密码算法和加密密钥来确定解密密钥在计算上是可行的
B.
在一个公钥密码体制中，一般存在公钥和私钥两个密钥
C.
公钥密码体制中仅根据密码算法和加密密钥来确定解密密钥在计算上是不可行的
D.
公钥密码体制中的私钥可以用来进行数字签名
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