An object-oriented database is one that is congruent with the data defined in object classes and sub classes.

The object of health education is A: All of the people B: Healthy people C: Sub healthy people D: Patients

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)

以下材质属于复合材质的是（） A: Blend B: DoubleSided C: Standard D: Multi/Sub-Object