仓库管理的管理对象是( )。
A.采购物资管理
B.库区的选择与建设
C.货物的收发管理
D.库区的利用状态(库、区、排、位)
参考答案:D
I'll go to the library as soon as I finish what I _____.[ ]
A. was doing
B. am doing
C. have done
D. had been doing
B超诊断前置胎盘的依据是()
A.妊娠32周B超下见胎盘近子宫颈内口或覆盖内口
B.妊娠12~28周B超下见胎盘近子宫颈内口或覆盖内口
C.妊娠后B超下见胎盘近子宫颈内口或覆盖内口
D.妊娠20周以后B超下见胎盘近子宫颈内口或覆盖内口
E.妊娠36周B超下见胎盘近子宫颈内口或覆盖内口