某企业生产甲、乙、丙、丁四种产品，其计划产量分别为200台、100台、300台和50

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (6) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (7) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (8) .
As administrators seek to block dangerous email attachments through the recognition of well-known (9) , 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 (10) access to your network.

A．attachment

B．packet

C．datagram

D．message

在数学上，常用一些特殊的三角函数公式来求一些特殊角的三角函数值，例如两角和与差的正余弦公式：sin （α±β）=sin αcos β±cos αsin β，cos( α±β）=cos αcos β±sin αsin β。试用上述公式计算sin75 °和cos75 °的值。

冲床的冲压力F=300πkN，钢板的厚度t=10mm，钢板的剪切强度极限τ_b=300MPa。冲床在钢板上可冲圆孔的最大直径d是：

A．d=200mm
B．d=100mm
C．d=4000mm
D．d=1000mm

我国婚姻法第24条规定：“夫妻有相互继承遗产的权利。”该规定属于（）

A.禁止性规范

B.命令性规范

C.义务性规范

D.授权性规范

以下程序的功能是：输出 100 以内（不含 100）能被 3 整除且个位数为 6 的所有整数， 请填空。main() { int i,j;for(i=0; _________;i++){ j=i*10+6;if(=_________) continue;printf("%d ",j);} }