作为治疗和紧急预防的制品是（）。 A.单链抗体 B.胎盘丙种球蛋白 C.mAb D. 发布时间：2017-09-12 04:56 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 作为治疗和紧急预防的制品是（）。A.单链抗体B.胎盘丙种球蛋白C.mAbD.白喉抗毒素E.以上均错
题型：单项选择题 A1/A2型题 已知椭C：x2a2+y2b2=1（a＞b＞0）的离心率为12，椭圆的短轴端点与双曲线y22-x2=1的焦点重合，过P（4，0）且不垂直于x轴直线l与椭圆C相交于A、B两点．（Ⅰ）求椭C的方程；（Ⅱ）求OA•OB的取值范围． 查看答案
题型：单项选择题 A1/A2型题 用下面方框中所给的单词或短语填空，使句子在逻辑上正确。(提示：选项中有一个是多余的。)take out / lead / compare / keep out / cheap / expensive 1. I need a new jacket. This one doesn't ________ the cold.2. My shoes were really ________. They only cost 10 dollars.3. Wait before you buy that cell phone. Let's ________ prices at another store.4. His uncle took him out to dinner at an ________ restaurant, and the food was very delicious.5. Working hard at English can ________ you to a wonderful world. 查看答案