为了看清楚所要观察的物体,显微镜的放大倍数越大越好。[ ]
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在△ABC中,边a,b,c的对角分别为A.B、C,且sin2A+sin2C-sinA•sinC=sin2B
(1)求角B的值;
(2)求2cos2A+cos(A-C)的范围.
— I'd love to go to Italy.
— ______.[ ]
A.So do I
B.So am I
C.Neither am I
D.So would I