A.hadoop的文件API不是通用的,只用于HDFS文件系统
B.Configuration类的默认实例化方法是以HDFS系统的资源配置为基础
C.FileStatus对象存储文件和目录的元数据
D.FSDataInputStream是java、io、DataInputStream的子类
A.您可以配置节点管理器作为Windows启动服务或UNIX平台守护进程
B.您可以在命令行或nodemanager.properties文件指定NodeManager的属性
C.在命令行更改NodeManager属性,会覆盖nodemanager.properties属性文件里的值
D.如果一个机器上安装有多个ManagerServer,就应该为每个Manager Server安装独立的Node Manager
A.全局比例因子设定以后只可以影响以前已画好的线型比例
B.打开“线型管理器”对话框,单击“加载”按钮,即可设置全局比例因子
C.全局比例因子设定以后只影响当前线型和以后线型,以前已画好的线型不受影响
D.全局比例因子设定以后影响全部的线型比例
A.测功机结构应适用于最大总质量≤3500kg的M类、N类车辆
B.测功机应能根据试验记录的车辆参数自动选择加载功率和模拟惯量
C.测功机应有永久性固定标牌
D.底盘测功机应安装基准惯量至少为800kg的机械飞轮
A.它在servlet类被实例化的时候调用
B.它在servlet类被classloader加载的时候被调用
C.每个servlet实例的该方法都会被多次调用
D.缺省的init()方法设置了Servlet的初始化参数,并用它的ServletConfig对象参数来启动配置
The car crashed into the train, and the driver was killed ______ the spot.
A.on
B.at
C.to
D.by
The boy fell in front of the car but fortunately the driver stopped ______ time.
A.on
B.at
C.with
D.in
The driver was of running away from the scene of the car accident.
A.charged
B.blamed
C.accused
D.punished
The driver was______.
A. an old man
B. a stranger
C. a girl
D. not mentioned
A. They must be 16 years old.
B. They should go to have their driver's test.
C. They must reach the proper age to drive.
D. They ought to do well in their driver's course.