泡菜发酵过程中亚硝酸盐含量(发酵温度:15℃单位mg/kg)、
发酵天数
盐水浓度
第3天
第5天
第7天
第9天
第11天
第13天
1号坛4%
1.6
3.2
3.8
3.5
3.4
2号坛6%
1.2
5.5
4.0
1.8
3号坛8%
0.5
2.0
1.5
make teach read have do
读问句,选择对应的答句。
____ ①Let's go to the library. A. Yes, I do.
____ ②Where is the teacher's office? B. Yes, it is.
____ ③Do you have lunch at school? C. Forty-six.
____ ④How many desks are there in your class? D. OK.
____ ⑤Is that your pencil? E. It's on the first floor.
下列关于抗利尿素分泌的叙述中,正确的是( )