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【多选题】
移动互联网带来商业机会的原因包括：()。A.
移动互联网技术降低了创业门槛
B.
诞生了新的商业模式
C.
促进了人才交流
D.
促使科技起飞
拍照语音搜题，微信中搜索"皮皮学"使用
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A.
that
B.
which
C.
if
D.
what
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A.
右心房肥大
B.
左心房肥大
C.
双心房肥大
D.
右心室肥大
E.
左心室肥大
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【单选题】肺源性心脏病患者,II、III、aVF导联P波高尖,电压0.27mV,时间0.10s,其心电图诊断为
A.
右心房肥大
B.
左心房肥大
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D.
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