桥式起重机小车车轮采用内侧单轮缘式车轮装配形式与外侧单轮缘式装配相比，具有（）的优点

下列情形中，宗地的界址信息发生了变更的有______。

A．新增划拨国有土地

B．土地权属界址调整

C．土地整理后的宗地重划

D．宗地所属地区的区划的变动

E．土地整理后的宗地重划

《山东省安全生产条例》规定，矿山、建筑施工单位以及危险物品的生产、经营、储存单位和使用数量构成重大危险源的单位，从业人员在（）以上的，应当设置安全生产管理机构，并按不低于从业人员千分之五但最低不少于三人的比例配备专职安全生产管理人员.

A.100 

B.200 

C.300

Melissa and LoveLetter made use of the trust that exists between friends or colleagues.Imagine receiving an （） from a friend who asks you to open it. This is what happens with Melissa and several other similar email （） . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages （） . As administrators seek to block dangerous email attachments through the recognition of well-known （） , virus writers use other extensions to circumvent such protection.Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users. Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the （） access to your network.

Melissa and LoveLetter made use of the trust that exists between friends or colleagues.Imagine receiving an （） from a friend who asks you to open it.

A．attachment

B．packet

C．datagram

D．message

下列哪种行为属于C型行为（）

A.敌意

B.紧张

C.紧迫感

D.压抑感

E.急躁

补体含量降低的疾病不包括以下哪种（）

A.心肌梗死

B.类风湿关节炎

C.革兰阴性细菌感染

D.SLE

E.自身免疫性溶血性贫血