参考答案和解析
参考答案:B
更多“__________ are descriptions of the steps a learner must take in order to achieve the objective. ”相关问题
  • 第1题:

    The ORDERS table has these columns:ORDER_ID NUMBER(4) NOT NULLCUSTOMER_ID NUMBER(12) NOT NULLORDER_TOTAL NUMBER(10,2)The ORDERS table tracks the Order number, the order total, and the customer to whom the Order belongs.Which two statements retrieve orders with an inclusive total that ranges between 100.00 and 2000.00 dollars? ()

    A. SELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;

    B. SELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;

    C. SELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;

    D. SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and <= 2000;

    E. SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and order_total <= 2000;


    参考答案:C, E

  • 第2题:

    l In C language, (4) are used to create variables and are grouped at the top of a gram block;

    A. declarationsB. dimensionsC. commentsD.descriptions


    正确答案:
             

  • 第3题:

    Whichtwodesignconcernsmustbeaddressedwhendesigningamulticastimplementation?()

    A.onlythelow-order23bitsoftheMACaddressareusedtomapIPaddresses

    B.onlythelow-order24bitsoftheMACaddressareusedtomapIPaddresses

    C.onlythehigh-order23bitsoftheMACaddressareusedtomapIPaddresses

    D.onlythelow-order23bitsoftheIPaddressareusedtomapMACaddresses

    E.the0x01004fMACaddressprefixisusedformappingIPaddressestoMACaddresses

    F.the0x01005eMACaddressprefixisusedformappingIPaddressestoMACaddresses


    参考答案:A, F

  • 第4题:

    In C language, ______ are used to create variables and are grouped at the top of a program block.

    A.declarations

    B.dimensions

    C.comments

    D.descriptions


    正确答案:A
    解析:译文的含义是:在C语言中,()用于创建变量,而且在程序块顶端分组。选项A、B、C、D的含义分别是声明、维、注释、描述。选项A符合题意,为所选。

  • 第5题:

    In C language,(69) are used to create variables and are grouped at the top of a program block.

    A.declarations

    B.dimensions

    C.comments

    D.descriptions


    正确答案:A

  • 第6题:

    3.—__________ 1 go out for a while?

    —No,you __________ You must finish your homework first.

    A. Must,needn't

    B. Can,may

    C. May,mustn't

    D. May,must


    正确答案:C