皮皮学，免费搜题
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搜题
【单选题】
当检测交错的心距时,距精度要求较高,可用心轴和 ( ) 检验。A.
卡钳
B.
游标卡尺
C.
百分表
D.
千分尺
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
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【简答题】I’m glad to write to you. It is near a month since you had left our hospital. I’m still worried about you. How are you get along these days? I think you may be much better now, but I’d better have a g...