三极管处在放大区时,其()电压小于零,发射结电压大于零。
参考答案:集电结
根据句意和所给汉语提示填写单词,使句子完整、通顺
1. -How many __________(牙齿) do people usually have?
-About 28 to 32.
2. Don't __________(喊叫) in the classroom. It's not polite.
3. People in the __________(西方) like eating hamburgers.
4. Do you have any __________(钱)? Can I borrow some ?
5. November comes after __________(十月).
下列关于休克的动脉血气分析及血液生化检查,叙述正确的是()
A.休克早期常表现为呼吸性酸中毒
B.休克早期常表现为呼吸性碱中毒
C.休克进展期发生明显的代谢性碱中毒
D.休克进展期发生明显的呼吸性酸中毒
E.休克晚期出现代谢性酸中毒合并呼吸性碱中毒