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[问答题,简答题] 72LKXF-24型泵在真空状态下为何不能启动?

下列除哪项外,脉象均有力() ["弦脉","滑脉","洪脉","长脉","濡脉"] 如果鸡雏出雏晚、雏弱、脐带愈合不良、腹大有时下痢,说明孵化期间() ["温度偏高","温度偏低","通风换气不良","头两天过热"] 妇科恶性肿瘤的血流频谱特点是() ["低速低阻","低速高阻","高速高阻","高速低阻","以上都不是"] 艾滋病神经综合征的确诊主要靠() ["流行病学资料","CT发现脑萎缩","脑活检","头部或脊髓的MRI检查","HIV抗原和抗体测定"] 牙体缺损修复时,牙体预备应达到的要求哪项是错误的() ["去除病变组织及无基釉","消除轴壁倒凹及尖锐棱角","提供良好的抗力形和固位形","不做预防性扩展","磨改过长牙和错位牙"] 72LKXF-24型泵在真空状态下为何不能启动?
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