施肥技术 technique of fertilization

1、空卵受精(fertilization of anempty egg)

空卵受精(fertilization of anempty egg)

2、Techniques for grouping items of vocab

Techniques for grouping items of vocabulary fall into three general categories: semantic fields, phonological sets and grammatical sets. Grouping items related by topics, for example, types of fruit, belongs to the semantic fields.（）A正确B错误

3、集中施肥 concentrated fertilization

集中施肥 concentrated fertilization

4、推荐施肥 fertilization recommendation

推荐施肥 fertilization recommendation

5、全层施肥 whole layer fertilization

全层施肥 whole layer fertilization

6、In the implementation of VLSM techniqu

In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links（）。A255.255.255.0B255.255.255.240C255.255.255.248D255.255.255.252E255.255.255.254