将点P（﹣4，3）先向左平移2个单位，再向下平移2个单位得点P'，则点P'的坐标

已知3x^m+1y⁵与某个单项式的和为-mx⁴yⁿ⁺³，则这个单项式为______．

下列各句中，加粗的成语使用恰当的一项是  [ ]

A．对于这座神秘的古代墓葬，专家们希望能从漫无边际的史料中找到一些关于它的蛛丝马迹。

B．从长辈们的闲言碎语中，他了解到父亲乔明志曾经是一位屡立奇功、威名赫赫的抗日英雄。

C．在44年的记者生涯中，他创作了一批优秀的新闻作品，在中国新闻史上留下了浓墨重彩的一笔。

D．市场调查发现，国内一些商家销售的红木家具质量良莠不齐，有关部门提醒消费者选购时要谨慎。

目前采油井可分为自喷采油、（）井采油、电动潜油泵井采油、电动螺杆泵井采油、水力活塞泵井采油等。

A、压力

B、注水

C、裸眼

D、抽油机

上门揽收后回班交接主要包括：区分业务种类、粘贴标签、点验签收、上缴款额、维护用户欠费台账等环节。

Information systems design is defined as those tasks that focus on the specification of a detailed computer-based solution. Typically, there are four systems design tasks for in-house development. 1)The first task is to specify (1), which defines the technologies to be used by one, more, or all information systems in terms of their data, processes, interfaces, and network components. This task is accomplished by analyzing the data models and process models that are initially created during requirements analysis. 2)The next systems design task is to develop the (2). The purpose of this task is to prepare technical design specifications for a database that will be adaptable to future requirements and expansion. 3)Once the database prototype has been built, the systems designer can work closely with system users to develop input, output and dialogue specifications. The (3) must be specified to ensure that the outputs are not lost, misrouted, misused, or incomplete. 4)The fourth design task involves packaging all the specifications from the previous design tasks into a set of specifications that will guide the (4) activities during the following phases of the systems development methodology. Finally, we should (5) and update the project plan accordingly. The key deliverable should include a detailed plan for the construction phase that should follow.

空白（4）处应选择（）

A.system administrator's

B.system analyst's

C.computer programmer's

D.system designer's