计算如下表达式的值:Sqrt(4)。Calculate the value of the following expression: Sqrt (4).a. 1b. 2c. 3d. 4
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计算如下表达式的值:Sqrt(4)。Calculate the value of the following expression: Sqrt (4).a. 1b. 2c. 3d. 4
A.a
B.b
C.c
D.d
参考答案: