流动型管理方式由于各货架内装载的货物是不断变化的,在货物变更登录时出差错的可能性较高。
参考答案:对
For those with family members far away, the personal computer and the phone are important in staying________.
A.connected
B. connecting
C. to connect
D. to be connected
女性,30岁,心悸、头晕2年,X线图像见图7-22,X线诊断为()。
A.靴形心
B.正常胸片
C.普大型心
D.梨形心