天然更新的质量标准是每公顷采伐迹地应当保留健壮目的树种的幼树不少于()株或幼苗不少于6000株,分布均匀度不低于60%。
参考答案:3000
Read and complete.(完成对话内容)
1. James: It's ______(温暖的)today. Let's play football.
Mike: Great!
2. Mary: Can l wear my new T-shirt?
Mom: No, it's ______(寒冷的), put on your coat.
3. Mike: Mum! It's ______(炎热的)today.
Mum: Put on your T-shirt.
4. Bill: It's warm today.
Mum: _____ ______(脱下)your jacket.
以下菌既可引起浅部真菌感染,又可引起深部真菌病的是()
A.球孢子菌
B.组织胞浆菌
C.念珠菌
D.隐球菌
E.马尔菲尼青霉菌