如图5-38所示，圆形截面对x轴的惯性矩为（）。 A．A B．B C．C D．D

下列不属于《准运证管理办法》规定的无证运输烟草专卖品行为的是（）。

A.使用伪造、变造的烟草专卖品准运证运输烟草专卖品

B.使用涂改、复印、过期的烟草专卖品准运证运输烟草专卖品

C.使用欺骗的手段取得烟草专卖品准运证运输烟草专卖品

D.运输烟草专用肥未办理烟草专卖品准运证

脑梗死病位在脑，涉及的脏腑是

A．肝、脾、肾

B．心、肝、肾

C．肺、脾、肾

D．心、脾、肾

E．肝、脾

Most computer systems are (16) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (17) to an outsider attack by preventing.
(18) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (19) users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually (20) by tools referred to as Intrusion Detection Systems.

A．power

B．tights

C．authorized

D．common

下列不是党员应享有的权利（）

A.参加党的有关会议，阅读党的有关文件，接受党的教育和培养

B.对党的工作提出建议和倡议

C.行使表决权、选举权、有被选举权

D.行使行政裁决权

用两个普通螺栓将两块钢板联接起来。已知每块板所受横向力为F，接合面间的摩擦系数f=0.15，为使联接可靠，应使摩擦力比外载荷大20%，则每个螺栓需要的预紧力为（）。

A.0.5F

B.2F

C.4F