皮皮学，免费搜题
登录
搜题
【简答题】
用蓝靛染色时,连续染三四天,布的颜色已经呈现深蓝色,就可把 ,从而达到固色和增加光泽的目的。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】We ____ here two hours ago . We ____ here for two hours . [ ]
A.
have arrived, have been
B.
have come, have been
C.
came, have come
D.
arrived, have been
【简答题】请简述交换机的数据转发规则。
【简答题】We appear to have been given the wrong address. as It ____________________ we have been given the wrong address.
【简答题】昆虫内共生菌在哪些细菌类群中分布较多?
【单选题】We ______ for you everywhere. Where have you been?
A.
have looked
B.
looked
C.
have been looking
D.
are looking
参考解析：
知识点：
题目纠错 0
发布
