数控机床精度检验中，（）是综合机床关键零件部件经组装后的综合几何形状误差。
A. 定位精度
B. 几何精度
C. 切削精度
D. 以上都对
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属于面料材料的一组为（）
A. 草棒和高粱秆
B. 牙膏盖和谷物
C. 泥和纸盒
D. 羽毛和树叶
Which two statements are true concerning the Resource Manager plans for individual pluggabledatabases (PDB plans) in a multitenant container database (CDB)?（）
A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.
B. In a PDB plan, subplans may be used with up to eight consumer groups.
C. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.
D. If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.
E. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.
女，9岁。2周前曾发热3天，伴咳嗽、流涕。近3天来感觉胸闷，心前区不适。查体：在左侧第5肋间锁骨中线外1cm心音低钝，心率120次/分，每分钟可闻及5～6次期前收缩。最可能的诊断是（）
A. 先天性心脏病
B. 心脏发育不良
C. 肥厚性心肌炎
D. 风湿性心脏病
E. 病毒性心肌炎
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