皮皮学，免费搜题
登录
搜题
【单选题】
如果将一个最大幅值 5.1V 的模拟信号转换为数字信号,要求模拟信号每变化 20mV 能使数字信号最低位( LSB )发生变化,( )位的模数转换器。A.
6
B.
8
C.
10
D.
12
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W：No mail for me today? They must have forgotten about me．I hope everything is all right at home． M：No news is good Hews．Remember many things are slow these days． Q：What are they talking about? (...
A.
Why no news is good news.
B.
Why everything is so slow.
C.
Why her family has forgotten about her.
D.
Why she didn't hear from her family.
【单选题】下列不属于药物不良反应的是（）
A.
哌唑嗪等降压药首次应用治疗高血压可导致血压骤降
B.
庆大霉素等具有的耳毒性
C.
血管紧张素转换酶制剂（ACEI）引起的干咳
D.
全麻时阿托品抑制腺体分泌
E.
硝酸酯类治疗心绞痛引起的头痛
【单选题】设有如下变量定义: int i=8,k,a,b; signed w=5;double x=1.42, y=5.2; 下符合C语言语法的表达式是:
A.
a+=a-=(b=4)*(a=3)
B.
x%(-3)
C.
a=a*3=2
D.
y=float(i)
【单选题】下列哪种描述 不是 细胞分化的意义所在 。
A.
增加个体细胞数目
B.
使不同的细胞产生出标志性蛋白质，执行特定功能
C.
细胞有机体发育的基础与核心
D.
补充衰老和死亡的细胞
【单选题】听力原文：M: No mail for me today? They must have forgotten about me. I hope everything is all right at home. W: No news is good news. Remember many things are slow these days. Q: What do we learn from the...
A.
No news is good news.
B.
The man's family has forgotten him.
C.
The woman works in the post office.
D.
The man expects to hear from his family.
相关题目：