支付结算的原则是:恪守信用,();谁的钱进谁的账,由谁支配;银行不垫款。
A、及时结算
B、按时付款
C、履约收付
D、履约付款
参考答案:D
自动洗片机照片干燥不良的原因,哪项不是
A.干燥设定温度偏低
B.干燥系统组件内的温度较高
C.风量不足
D.定影液疲劳
E.显影液陈旧
Melissa and LoveLetter made use of the l:rust that exists between friends or colleagues.Imagine receiving an (1)from a friend who asks you to open it.This is what happens with Melissa and several other similar email (2).Upon running, such worms usually proceed to send themselves out to email addresses from the victim's address book, previous emails, web pages (3). As administrators seek to block dangerous email attachments through the recognition of well-known (4),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 (5)access to your network.
空白(5)处应选择()
A.cracker
B.user
C.customer
D.client