皮皮学，免费搜题
登录
搜题
【单选题】
声明ServletFileUpload对象的正确方法是( )。A.
ServletFileUpload upload=new ServletFileUpload()
B.
FileItemFactory factory=new FileItemFactory() ServletFileUpload upload=new ServletFileUpload(factory)
C.
FileItemFactory factory=new DiskFileItemFactory() ServletFileUpload upload=new ServletFileUpload(factory);
D.
ServletFileUpload() 无需实例化，可直接使用
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The direction of rotation of an induction motor is ________.
A.
opposite the rotating field direction
B.
the same as the direction of the rotating field
C.
determined by the number of poles
D.
determined by the staggering of the brushes
【单选题】An electron moves in the negative x direction, through a uniform magnetic field in the negative y direction. The magnetic force on the electron is:
A.
in the positive z direction
B.
in the negative z direction
C.
in the positive y direction
D.
in the negative x direction
【简答题】Flying in a westward direction will
【多选题】The direction indices represent
A.
The connecting line between any two points within a crystal.
B.
The parallel, codirectional crystallographic direction of a crystal.
C.
The connecting line between vertex.
D.
The direction and distance between atoms.
【单选题】患者,女性,13岁,要求矫治“虎牙”。检查:磨牙中性关系,上牙弓拥挤9mm,下牙弓拥挤7mm,前牙覆(牙合)覆盖II度,直面型,下颌均角。此患者最佳治疗方案为
A.
不拔牙矫治
B.
拔除四颗第一前磨牙
C.
拔除四颗第二前磨牙
D.
拔除上颌两颗第一前磨牙
E.
拔除上颌两颗第一前磨牙，下颌两颗第二前磨牙
相关题目：