皮皮学，免费搜题
登录
搜题
【单选题】
心肌在整个收缩期内，不再接受刺激而产生扩布性兴奋的原因是A.
膜电位绝对值太高
B.
阑电位绝对值太高
C.
兴奋性正处于有效不应期
D.
刺激强度不够
E.
兴奋性正处于相对不应期
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】听力原文： Do you know the most unusual building of the nineteenth century? Perhaps it was the Crystal Palace. It was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different f...
A.
The steam boat.
B.
The steam engine.
C.
The steam hammer.
【简答题】1,安装 VMware tools工具,实现虚拟机内部与外面文件的共享。即:文件可以相互拖动,【截安装成功的图提交】 参考文档: https://jingyan.baidu.com/article/597a03356fdc312b5243f6.html 2. 用C语言构建一个可执行程序的流程。【截取每个阶段所产生的文件内容图提交】 参考文档: https://www.cnblogs.com/g...
【单选题】电子商务安全包括许多内容，其中保护软件和数据不被篡改、破坏和非法复制的是（ ）.
A.
电子商务系统硬件安全
B.
电子商务系统软件安全
C.
计算机安全控制
D.
计算机传输加密
【单选题】控制电动机运行的功能码组是( ),参数( )是操作面板控制启停,参数( )是外接端子控制启停。
A.
F0.004,0,1
B.
F0.004,1,0
C.
F0.000,0,1
D.
F0.000,1,0
【简答题】It was t_________ , and all money was wasted on eating and drinking,
【简答题】根据句意及首字母提示写出所缺单词。 1. It was t _____ to hear that a seven-year-old girl saved her parents in such a erous situation. 2. It used to be a quiet seaside town, but now it has become a bit t _____. 3.W...
【单选题】She doesn't know _________________ made her daughter so sad this morning.
A.
what was it
B.
why it was that
C.
how that was
D.
what it was that
【简答题】A．Because he could have time to send war information to the Germans. B．Because it was the best place to wait for his girlfriend during wartime. C．Because he was afraid of being discovered his real mis...
【单选题】Mr. Mike doesn’t understand ________ made his wife so upset this morning.
A.
what was it
B.
why it was that
C.
how that was
D.
what it was that
相关题目：
参考解析：
知识点：
题目纠错 0
发布
