如何决定烤烟打顶高度和留叶数?
参考答案:
打顶高度和留叶数多少要考虑品种、营养状况、地力、气候、密度和栽培条件,以烟棵能形成优质烟的田间长相为最终衡量标准。
根据对话内容,在空格中填写一句话,使对话完整、正确(共10分)
A: Hey, Lingling, 小题1: ?
B: I was born in a small village in Shanxi Province.
A: 小题2: ?
B: Its name was Xucun. What about you, Tony?
A: I was born in Cambridge. It’s a small city in England.
B: 小题3: ?
A: Yes, I do. My first school’s name was Darwin Primary School.
B:小题4: ?
A: My first teacher was Mrs. Lane.
B:小题5: ?
A: She was very strict but very nice. She often taught us well and made her lessons very interesting and lively.
B: Thank you very much.
A: You’re welcome.
万用表表头通常采用具有较高灵敏度的()形式。
A、磁电系
B、电磁系
C、电动系