氧熔剂切割高铬钢时,也可采用铁粉与石英砂按()比例混合的熔剂。
A、5:1
B、1:1
参考答案:B
用weather或climate填空。
1. These flowers will not grow in cold _____ .
2. _____ permitting, we'll go out for a camp next weekend.
3. The _____ forecast said it would be fine all day.
4. Los Angeles has a warm, dry _____.
5. The plant has already conditioned to the northern _____ .
物流企业流动资产的数量按照功能不同可以分为正常需要量和______。