A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion， they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself. What design issue has the team discovered？（） Tight coupling。 Low cohesion。 High cohesion。 Loose coupling。 Weak encapsulation。 Strong encapsulatio。
万向联轴器的角度偏移越大，则（）角速度的变化也越大。
在对文件的操作中，reset是建立并打开一个新文件。
Which statements about the MEMORY_TARGET initialization parameter are true？（） MEMORY_TARGET can be increased up to the value of MEMORY_MAX_TARGET， if MEMORY_MAX_TARGET is set to a value greater than zero。 MEMORY_MAX_TARGET defaults to a value of zero if MEMORY_TARGET is not set。 MEMORY_TARGET represents the total amount of memory that can be allocated to SGA and PGA memory structures.。 MEMORY_TARGET is static and cannot be modified without shutting down the instance。
张某，42岁，食管癌晚期，不能进食，给予脂肪乳、氨基酸等输入。1周后，患者主诉有疼痛感，注射部位沿静脉走向出现条索状红线，局部组织肿胀，发红。临床考虑静脉炎。发生静脉炎的原因是（） 输液速度过快。 输液量过大。 溶液含有致热物质。 长期输人高浓度溶液。 输液速度过慢。
You want to administer your PROD database from a remote host machine using a Web-enabled interface. Which Oracle tool would you use to accomplish this task efficiently without using command-line interfaces？（）
