CRH2型动车组特高压电气系统，主要有（）大部件。
A.受电弓、保护接地开关EGS
B.故障隔离开关、真空断路器VCB
C.避雷器、高压电缆及高压连接器
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
给定函数f(x)=
（I）求证：f（x）总有两个极值点； （II）若f（x）和g（x）有相同的极值点，求a的值． |
胆功能为（）。
A.受纳与腐熟水谷
B.主津
C.贮藏、排泄胆汁
D.主液
E.贮尿和排尿（2010年考试真题）
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.
Imagine receiving an （） from a friend who asks you to open it.
A．attachment
B．packet
C．datagram
D．message
切屑夜有以下四个作用：（）、（）、（）、（）。
税务登记不包括( )。
A．开业登记
B．变更登记
C．核定应纳税额
D．注销登记