【单选题】
There was a 0.3 per cent rise in the cost-of-living （）
A、mark
B、grade
C、indication
D、index
查看正确答案A、每分钟进给0.3毫米 B、每齿切削厚度0.3mm C、每转进给0.3毫米 D、每秒进给0.3毫米
搜题
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第3题
A、There are 254 usable subnets. B、There are 256 usable hosts per subnet. C、There are 50 usable subnets. D、There are 254 usable hosts per subnet. E、There are 24 usable hosts per subnet. F、There is one usable network.
