The pivot row must be selected so that all the other basic variables remain positive.
必须选择枢轴行，以便所有其他基本变量保持正数。
"Industry sort" must be selected!
“行业分类”必须选择！
At least one role must be selected.
至少应该选择一个角色。
"Query condition" must be selected!
“查询条件”必须选择！
Finally, the installation path must be selected.
最后，必须选择安装路径。
Invalid permissions setting. At least one role must be selected.
权限设置无效。至少应该选择一个角色。
Therefore, in the decoration must be selected before the hood, …
所以，在装修前一定要选好抽油烟机，…
A protocol for this adapter must be selected to allow proper configuration.
要正确配置这个适配器，必须为其选择一个协议。
First, a team must be selected with the skills to match the objective of the mission.
首先，一个队一定与技术一起选择相配任务的目的。
In certain situations services must be selected at runtime from a set of services based on QoS.
在某些环境下，必须在运行时从基于QoS的服务集中选择服务。
This step recognizes that the software that realizes a given service must be selected or custom built.
这个步骤指出实现给定服务的软件必须被选择或者自定义构建。
This may also be thought of as a slot in the topology that must be selected at a later point in time.
这还可以被看作是这个拓扑中的一个插槽，以后迟早会是一个必选项。
The results show that the corresponding polishing conditions must be selected for different granite.
结果表明，加工不同的花岗石应选择相应的加工工艺。
Web services must be selected at runtime from a set of services defined in an external service registry.
必须在运行时从一个外部服务注册表中定义的服务集中选择Web服务。
So, in order to gain the necessary detail of the traffic, sampling time scale must be selected correctly.
所以，为了得到必要的流量特征细节，必须合理选择采样时间粒度。
Diagnostic procedures must be selected purposely and combined to use to improve confirmed diagnostic rate.
应有目的地选择检查方法并结合多种的检查手段来提高检出率及确诊率；
In order to develop family car, the suitable competitive type or performance target type must be selected.
为开发家用轿车，必须选择适当的竞争车型或性能目标车型进行对比试验。
The processed CONNECT tag must be selected in the presentation template for the CONNECT tags to be processed.
为能够处理CONNECT标记，必须在显示模板中选择处理后的CONNECT标记。
Seedlings must be selected carefully, obtaining them from tree nurseries recommended by the area forest officer.
幼苗必须仔细挑选，获得他们苗圃建议该地区的森林。
The HTFS - Engines rating method must be selected and you must have access to the HTFS-MUSE software to see this page.
必须选择HTFS-发动机评定方法，同时要有权限进入HTFS-MUSE软件，查看本页。
In order to achieve the required quality, the quenching gases and plant technology must be selected and adjusted carefully.
为获得所需的质量，必须仔细选择和调整淬火气体和工厂的工艺。
In order to match the melody, the words of pop songs must be selected prudently and the language used must be modified accordingly.
通俗歌曲的歌词为了更有效地配合曲子表情达意，必须精心选择、调整修饰语言。
Guards sor protective devices designed to protect against risks arising from moving parts must be selected on the basis of the type of risk.
必须根据风险类型选择用于防护由运动部件引起的风险的防护装置罩或保护装置。
So, the expert suggests that plastic cup when the choose and buy, must be selected in accordance with national standards made of food grade plastic cups.
所以，专家提示，在选购塑料杯时，一定要挑选符合国家标准的食用级塑料所制的水杯。
First of all, there are the friends with whom we are going to share this enjoyment. Different types of friends must be selected for different types of enjoyment.
第一，他们必须有共同享受这种生活的朋友，不同的享受须有不同的朋友。
So, the astronomical site must be selected carefully, otherwise the large telescope of cost can't display its function fully, but can play the role of the small telescope.
天文台台址必须精心选择，否则价格昂贵的大望远镜不能充分发挥其功效，只能起到小望远镜的作用。
When an activity is created, a connection must be selected so that the activity can successfully connect to the external system and perform the defined activity operations.
当创建活动时，必须选择一个连接，活动才能成功地连接到外部系统并执行定义的活动操作。
The enable event Subscription checkbox in the library server Configuration dialog (Figure 6) must be selected to enable the logging of events for a library server instance.
LibraryServerConfiguration对话框(图6)中的EnableEventSubscription复选框必须选中，以便激活一个库服务器实例的事件日志功能。
The enable event Subscription checkbox in the library server Configuration dialog (Figure 6) must be selected to enable the logging of events for a library server instance.
LibraryServerConfiguration对话框(图6)中的EnableEventSubscription复选框必须选中，以便激活一个库服务器实例的事件日志功能。
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