下列说法正确的是（ ） A．物体的运动必须有力来维持 B．力是物体运动的原因 C

Most computer systems are (26) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (27) to an outsider attack by preventing (28) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (29) 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 (30) by tools referred to as Intrusion Detection Systems.

A．searched

B．checked

C．tested

D．detected

变压器纵差保护范围是（）。

A.变压器过负荷

B.变压器供电部分三相短路

C.变压器供电部分过电压短路

D.变压器相间、层间、匝间短路

患者男性，30岁，上颌双侧中切牙缺失，可摘局部义齿修复，双侧第一前磨牙做基牙，一般情况下腭侧基托应设计至

A．尖牙远中

B．第二磨牙远中

C．第一磨牙远中

D．第一前磨牙远中

E．第二前磨牙远中

对漏电保护器要进行定期检查吗？

女性，65岁。因发现右侧 * * 近 * * 处包块半年来院就诊。既往体健。查体：右侧乳腺外上象限近 * * 处可触及约3cm×1.5cm质硬包块，无压痛，边界尚清，局部皮肤稍凹陷。腋窝未触及明显肿大淋巴结。

患者的临床分期为（）

A.0期

B.Ⅰ期

C.ⅡA期

D.ⅡB期

E.Ⅲ期

F.Ⅳ期