a small piece of card which is attached to an object and has information about that object.______________

API函数（ ）用于删除本地文件。 A: wx.saveFile(Object object) B: wx.removeSavedFile(Object object) C: wx.getSavedFileInfo(Object object) D: wx.getSavedFileList(Object object)

隐藏loading 提示框的API函数是（ ）。 A: wx.hideLoading(Object object) B: wx.showLoading(Object object) C: wx.hideToast(Object object) D: wx.showModal(Object object)

显示loading 提示框的API函数是（ ） A: wx.showModal(Object object) B: wx.showLoading(Object object) C: wx.hideToast(Object object) D: wx.hideLoading(Object object)

隐藏消息提示框的API函数是（ ） A: wx.showToast(Object object) B: wx.showModal(Object object) C: wx.showLoading(Object object) D: wx.hideToast(Object object)

API函数（ ）用于将文件保存到本地。 A: wx.saveFile(Object object) B: wx.getSavedFileList(Object object) C: wx.getSavedFileInfo(Object object) D: wx.removeSavedFile(Object object)

API函数（ ）用于动态设置当前页面的标题。 A: wx.setNavigationBarTitle(Object object) B: wx.setNavigationBarColor(Object object) C: wx.showNavigationBarLoading(Object object) D: wx.hideNavigationBarLoading(Object object)

API函数（ ）用于获取系统剪贴板的内容。 A: wx.setClipboardData(Object object) B: wx.getClipboardData(Object object) C: wx.vibrateShort(Object object) D: wx.vibrateLong(Object object)

API函数（ ）用于移除 tabBar 某一项右上角的标记文本 A: wx.showTabBar(Object object) B: wx.hideTabBar(Object object) C: wx.setTabBarBadge(Object object) D: wx.removeTabBarBadge(Object object)

API函数（ ）用于隐藏 tabBar 某一项的右上角的红点 A: wx.showTabBarRedDot(Object object) B: wx.hideTabBarRedDot(Object object) C: wx.setTabBarStyle(Object object) D: wx.setTabBarItem(Object object)