题目内容

涡环对飞机性能有哪些影响() 1.旋翼拉力显著减小,下降率急剧增大 2.直升机抖动和摇晃 3.稳定性和操纵性变差

A. 1、2、3
B. 1、3
C. 1、2
D. 2、3

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检测器的有效覆盖水平平面半径,室内宜为(),室外宜为()。在液态烃、甲B类液体储罐的防火堤内,宜每隔()设一台检测器,且距储罐的排水口、采样口或底部接管法兰、阀门不应大于()。

线缆型号标签的后三位数字表示长度,单位是dm。

A. 正确
B. 错误

You have a computer that runs Windows XP Professional. Five users share the computer. A user named User1 is a member of the Power Users group and the Administrators group. User1 has encrypted files on the computer. User1 takes an extended leave of absence. You need to ensure that users cannot access the computer as User1. You must be able to provide User1 access to the files upon User1’s return. What should you do?()

A. Disable the User1 account.
B. Add User1 to the Guests group.
C. Reset the password for the User1 account.
D. Rename ntuser.dat as ntuser.man in the User1 user profile.

良性肿瘤的恶性变,它的编码应是()

A. 肿瘤的组织学和动态编码都改变
B. 将肿瘤的动态编码改变
C. 肿瘤的部位编码改变
D. 肿瘤的组织学编码改变
E. 肿瘤的动态编码和部位编码都改变

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