参考答案和解析
参考答案:错误
更多“american university students have always liked to get degrees that are aimed at prepar ”相关问题
  • 第1题:

    Personal firewall is a technology that helps(66)intruders from accessing data on your PC via the Internet or another network, by keeping(67)data from entering or exiting your system.

    Hackers do not just target national security organizations for(68): They want your tax returns, network passwords, or bank account numbers. And you do not want the FBI kicking in your door because someone hijacked your PC to(69)in the latest denial-of-service attack on the Internet. Now that "always-on" broadband connections such as cable modems and digital subscriber line are becoming more popular, home users are at risk. Fortunately, you can protect your data. Firewalls can block(70)attacks and protect your PC from outside threats.

    A.allow

    B.prevent

    C.invite

    D.get


    正确答案:B

  • 第2题:

    创建students对象,_______语句可以选出第二个同学的身高。 students数据如下: age height weight 1 19 170 68 2 20 165 65 3 18 175 65

    A.students[1,'height']

    B.students.loc[2,'height']

    C.students.iloc[1, 1]

    D.students['height'][3]


    students.loc[2,'height'];students.iloc[1, 1]

  • 第3题:

    查看MySQL中支持存储引擎的语句是 。

    A.SHOW ENGINS; 和 SHOW VARIABLES LIKE 'have%';

    B.SHOW VARIABLES; 和 SHOW VARIABLES LIKE 'have%';

    C.SHOW ENGINS; 和 SHOW ENGINS LIKE 'have%';

    D.SHOW ENGINS; 和 SHOW VARIABLES from 'have%';


    SHOW ENGINS; 和 SHOW VARIABLES LIKE 'have%';

  • 第4题:

    radiation damage选择

    ____________prevent a lot of radiation damage

    [A] get

    [B] make

    [C] have

    [D] do


    是完型填空吧?你要把整篇都传上来这样片面的截句无法给出答案。

     

  • 第5题:

    3、下列哪一个表述是正确:

    A.always@(posedge CLK or RST)

    B.always@(posedge CLK or negedge RST or A)

    C.always@(posedge CLK or D or Q)

    D.always@(posedge CLK or negedge RST)


    deductive,guided discovery

  • 第6题:

    创建students对象,_______语句可以选出第二个同学的身高。 students数据如下: age height weight 1 19 170 68 2 20 165 65 3 18 175 65

    A.students.loc[2,'height']

    B.students.iloc[1, 1]

    C.students[1,'height']

    D.students['height'][3]


    students.loc[2,'height'];students.iloc[1, 1]