皮皮学，免费搜题
登录
搜题
【单选题】
Systole is theA.
bundle of His
B.
heart sounds
C.
relaxation phase of the cardiac cycle
D.
contraction phase of the cardiac cycle
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
【简答题】可持续发展(名词解释)
【简答题】可持续发展（名词解释）
【简答题】名词解释：国际收支平衡、旅游出口、旅游乘数、可持续发展、旅游承载力。
【简答题】Five-year-old Elia arrived at school with a big box of colored pencils. Her friend, Anna, offered to exchange her set of markers for the brand-new pencils. Elia agreed, but soon discovered that the ma...
【多选题】以下属于关闭窗口方法中,正确的是( )
A.
按 CTRL+F4
B.
按 ALT+W
C.
ALT+ 空格 +C
D.
单击菜单栏“文件”；“关闭”命令；
E.
E 、直接点击窗口右上角关闭按钮
【简答题】Five-year-old Elia arrived at school with a big box of colored pencils. Her friend, Anna, offeted to exchange her set of markers for the brand-new pencils. Elia agreed, but soon discovered that the ma...
【简答题】Five-year-old Elia arrived at school with a big box of colored pencils. Her friend, Anna, offeted to exchange her set of markers for the brand-new pencils. Elia agreed, but soon discovered that the ma...
【简答题】名词解释:可持续发展
相关题目：
参考解析：
知识点：
题目纠错 0
发布
