某工厂生产甲、乙两种产品,生产1公斤甲产品需要煤9公斤、电4度、油3公斤,生产1公斤乙产品需要煤4公斤、电5度、油10公斤。该工厂现有煤360公斤、电200度、油300公斤。已知甲产品每公斤利润为7千元,乙产品每公斤利润为1.2万元,为了获取最大利润应该生产甲产品 ( ) 公斤。
- A.20
- B.21
- C.22
- D.23
正确答案及解析
正确答案
解析
设x1为甲产品生产量,x2为乙产品生产量。对该问题求解最优方案可以由下列数学模型描述:max z=7x1+12x29x1+4x2≤3604x1+5x2≤2003x1+10x2≤300x1≥0,x2≥0求解得x1=20
你可能感兴趣的试题
Network security is the protection of the underlying networking infrastructure from ( )access, misuse, or theft, It involves creating a secure infrastructure for devices, users and applications to work in a ( ) manner. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements ( ) and controls. Authorized users gain access to network resources. A ( ) is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. A virtual (作答此空) network encrypts the connection from an endpoint to a network, often over the internet. Typically a remote-access VPN uses IPsec or Secure Sockets Layer to authenticate the communication between device and network.
-
- A.public
- B.private
- C.personal
- D.political
- 查看答案
Network security is the protection of the underlying networking infrastructure from ( )access, misuse, or theft, It involves creating a secure infrastructure for devices, users and applications to work in a ( ) manner. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements ( ) and controls. Authorized users gain access to network resources. A (作答此空) is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. A virtual ( ) network encrypts the connection from an endpoint to a network, often over the internet. Typically a remote-access VPN uses IPsec or Secure Sockets Layer to authenticate the communication between device and network.
-
- A.firewall
- B.router
- C.gateway
- D.switch
- 查看答案
Network security is the protection of the underlying networking infrastructure from ( )access, misuse, or theft, It involves creating a secure infrastructure for devices, users and applications to work in a ( ) manner. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements (作答此空) and controls. Authorized users gain access to network resources. A ( ) is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. A virtual ( ) network encrypts the connection from an endpoint to a network, often over the internet. Typically a remote-access VPN uses IPsec or Secure Sockets Layer to authenticate the communication between device and network.
-
- A.computing
- B.tanstation
- C.policies
- D.simulations
- 查看答案
Network security is the protection of the underlying networking infrastructure from ( )access, misuse, or theft, It involves creating a secure infrastructure for devices, users and applications to work in a (作答此空) manner. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements ( ) and controls. Authorized users gain access to network resources. A ( ) is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. A virtual ( ) network encrypts the connection from an endpoint to a network, often over the internet. Typically a remote-access VPN uses IPsec or Secure Sockets Layer to authenticate the communication between device and network.
-
- A.economical
- B.secure
- C.fair
- D.efficient
- 查看答案
Network security is the protection of the underlying networking infrastructure from (作答此空)access, misuse, or theft, It involves creating a secure infrastructure for devices, users and applications to work in a ( ) manner. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements ( ) and controls. Authorized users gain access to network resources. A ( ) is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. A virtual ( ) network encrypts the connection from an endpoint to a network, often over the internet. Typically a remote-access VPN uses IPsec or Secure Sockets Layer to authenticate the communication between device and network.
-
- A.unauthorized
- B.authorized
- C.normal
- D.frequent
- 查看答案