物流标准化的基点是（）
A.物流包装标准化
B.物流包装系列规格尺寸
C.集装标准内容
D.物流设备规格参数
参考答案：B
The operation room in every hospital has to _______bacteria of any kind so that the patient being operated on doesn’t get infected.
A．keep free from
B．make it free from
C．to be made free with
D．be kept free from
监理工程师在审查预算单价套用是否正确时，应注意审查哪几个方面
