maya中怎样快速复制物体?() ["Crtl+c","Crtl+V","Crtl+D","Crtl+A"]
AIHA患者输血宜选()。 ["去白细胞悬浮红细胞","洗涤红细胞","两者均可","两者均否"]
看到可怜的众生心生不忍,这是菩提心吗?为什么?
钢筋保护层厚度检验时,纵向受力钢筋保护层厚度的允许偏差,对梁类构件为+10mm,-7mm;对板类构件为() ["A、5mm,-3mm","B、+10mm,-5mm","C、+8mm,-5mm"]
时间上要及时、数量上要适当、质量上要准确、内容上要适用()。 ["有效性","共享性","层次性","不完全性","经济性"]
依据生态特性,甜瓜可分为()大生态类型。