低带耐受
参考答案:
抗原剂量过低,不足以激活T和B细胞产生免疫应答所致的免疫耐受。
请用所给动词的适当形式填空。
1. We ______________ (have) a picnic tomorrow.
2. My brother ______________ (go) to Xi'an next Sunday.
3. What ______________ you ______________ (do) next weekend? I______________ (collect) stamps.
4. Where ______________ she ______________ (work) next year? She ______________ (work) in a
computer company.
5. What ______________ you going to ______________ (buy) next holiday? I ______________ (buy) some
postcards for my friends.
本规划对上一轮规划品种,根据其生产发展变化的实际情况,按照()的原则,对优势区域重新进行确认和划定,并细化到乡镇。
A、大稳定
B、分散管理
C、小调整
D、相对集中连片