Which statement about the Flinders bar of the magnetic compass is CORRECT().
A. It compensates for the error caused by the vertical component of the Earth's magnetic field
B. It compensates for error caused by the heeling of a vessel
C. It compensates for quadrantal deviation
D. It is only needed in equatorial water
听力残疾三级儿童在无助听设备帮助下,只能听到部分或简单句子。
A. 正确
B. 错误
移动用户漫游号码MSRN是由()临时分配,其作用是供移动交换机路由选择使用。
A. HLR
B. MSC
C. AUC
D. VLR
NTFS文件系统权限设置包括()、()、()、()、()、()六个标准权限。