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【多选题】
平面刮削有单个平面刮削和组合平面刮削，曲面刮削有（）面刮削等。A.
内圆柱
B.
内圆锥
C.
球
D.
椭圆
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知识点：
皮皮学刷刷变学霸
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【简答题】Lesson 4 模拟通话 2-1
【简答题】Lesson 4 模拟通话 2-2
【单选题】Mark Bryson is talking to his students about global warming. Listen to what he tells them and choose the correct statements.
A.
In some northern areas, the seawater is cooler than melting snow and ice.
B.
In some northern areas, the snow and ice are cool.
C.
In some northern areas, the melting snow and ice have the job of cooling the seawater.
D.
In some northern areas, the melting snow and ice cool the seawater that then cannot keep
【单选题】Mark Bryson is talking to his students about global warming. Listen to what he tells them and choose the correct statements.
A.
Changes in time affect the world's lakes, rivers, and oceans.
B.
Changes in temperature affect the world's lakes, rivers, and oceans
C.
Changes in temperature are the effect of the words lakes, rivers, and Oceans,
D.
Changes affect the world's lakes, rivers, and oceans.
【单选题】患者男性，62岁，因病态窦房结综合征植入起搏器2个月。患者无冠心病史，超声心动图检查正常。图4-8-6-A为植入起搏器前的心电图，图4-8-6-B为植入起搏器后随访的心电图。根据图4-8-6-B的心电图表现，正确的诊断是（）。
A.
窦性心律＋心室起搏心律，电张调整性T波改变
B.
窦性心律＋心室起搏心律，心肌缺血
C.
窦性心律＋心房起搏心律，心肌缺血
D.
窦性心律＋心房、心室起搏心律，心肌缺血
E.
窦性心律＋心室起搏心律，室性期前收缩
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