衡量顾客期望与服务质量的标准有哪些？

2岁小儿，出生后半个月开始出现便秘，进行性加重，常需要辅以泻药。体检：精神尚好，消瘦，腹胀，可见肠型及肠蠕动波，X线示肠管扩张，腹腔内可见液平面。

该病的病理改变为（）

A.痉挛段神经节细胞缺如

B.痉挛段神经节细胞增多

C.扩张段神经节细胞缺如

D.扩张段神经节细胞增多

E.移行段神经节细胞缺如

F.肠壁坏死出血

预激综合征心电图表现为（）

A.p波可出现在QRS波群之前或之后

B.PR间期<0.12秒

C.ST-T呈继发性改变与QRS波群主波方向相反

D.QRS波群时限>0.12秒

E.波群起始部有DEltA波

To comply with the Global Investment Performance Standards (), which of the following accounts a firm claiming compliance should include when building a composite for performance（）

A. non-fee-paying accounts.

B. terminated accounts.

C. non-discretionary accounts.

Melissa and Love Letter made use of the trust that exists between friends or colleagues. Imagine receiving an (26) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (27) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (28) .

A. virtualB. virus C. worms D. bacteria

As administrators seek to block dangerous email attachments through the recognition of well-known (29) , 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 (30) access to your network.

当需要利用（）以保持设备校准状态的可信度时，应建立和保持相关的程序。

A、计量检定

B、期间核查

C、内部校准

D、外部校准