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【判断题】
4. Heavy industries are traditionally linked with rail transport. ( )A.
正确
B.
错误
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举一反三
【单选题】下列有关应用文知识的表述,不正确的是( )
A.
条据是便条和单据的总称。单据也是一种便条,但适用范围仅限于钱、财、物方面。
B.
启事既可以写在纸上张贴出去,也可以在报纸、电台、电视台、网络等媒体发布。
C.
广告文案是广告作品中用以表达主题和创意的语言文字部分。
D.
简报又称“动态”“简讯”“工作通讯”“内部参考”等,是一种公开发行的小报。
【单选题】Consider an object on a rotating disk a distance r from its center, held in place on the disk by static friction. Which of the following statements is NOT true concerning this object?
A.
If the angular speed is constant, the object has a zero acceleration.
B.
The object has a tangential acceleration only if the disk has an angular acceleration.
C.
The object always has a centripetal acceleration except when the angular speed is zero.
D.
If the angular speed is constant, the speed of object is also constant.
【单选题】Consider an object on a rotating disk a distance r from its center, held in place on the disk by static friction. Which of the following statements is not true concerning this object?
A.
If the angular speed is constant, the object must have constant tangential speed.
B.
If the angular speed is constant, the object is not accelerated.
C.
The object has a tangential acceleration only if the disk has an angular acceleration.
D.
If the disk has an angular acceleration, the object has both a centripetal acceleration and a tangential acceleration.
E.
The object always has a centripetal acceleration except when the angular speed is zero
【单选题】Phillip, can you see something red _____ in the distance on the water?
A.
Floated
B.
float
C.
being float
D.
floating
【单选题】Analyze the following code: public class Test1 { public Object max(Object o1, Object o2) { if ((Comparable)o1.compareTo(o2) >= 0) { return o1; } else { return o2; } } }
A.
The program has a syntax error because Test1 does not have a main method.
B.
The program has a syntax error because o1 is an Object instance and it does not have the compareTo method.
C.
The program would compile if ((Comparable)o1.compareTo(o2) >= 0) is replaced by (((Comparable)o1).compareTo(o2) >= 0).
D.
b and c are both correct.
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