A、B两物体均做匀变速直线运动，A的加速度a1=1.0m/s2，B的加速度a2=

Most computer systems are (165) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (166) to an outsider attack by preventing (167) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (168) 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 (169) by tools referred to as Intrusion Detection Systems.

（166）处是（）

A.reliable

B.secure

C.indestructible

D.steady

对质保记录修正和增补必须（）

A.由监督站审批；

B.由本单位内任一领导审批；

C.按书面程序进行，并由建立该记录的原单位审批，无法按此进行时，则必须由其它授权单位进行审核和批准；

D.由核安全局审批。

某男，9岁。感冒1周后全身皮肤出现瘀点，经诊断确诊为特发性血小板减少性紫癜出血。治疗应首选

A．免疫抑制剂
B．输新鲜血液
C．脾切除
D．抗生素
E．糖皮质激素

乙某为了躲避持刀抢劫犯甲某的追赶，在一胡同拐弯处踹开一住户大门进入躲避，不幸将一老太太撞倒在地造成小腿骨折。乙某的行为属于：

A．正当防卫

B．紧急避险

C．疏忽大意的过失犯罪

D．意外事件

营业网点柜员人数5人（含）以上、20人以下的营业网点至多设（）名三级柜员。

A、1名

B、2名

C、3名

D、4名