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【单选题】
减压阀的原理是：当进油口的压力大于调定压力时，减压阀才起减压作用。如图所示，减压阀的调定压力是3Mpa，当进油口A的油压为5Mpa，问出油口B的压力时多少？A.
0Mpa
B.
3Mpa
C.
5Mpa
D.
2Mpa
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反馈参考答案：
举一反三
【单选题】有如下赋值语句,结果为“大家好”的表达式是( ) a="你好" b="大家"
A.
b+b+left(a,3,4)
B.
b+left(a,2,1)
C.
b+right(a,2)
D.
b+right(a,1)
【单选题】Which of the following is NOT mentioned in the text?
A.
Demonstrators are not in favor of Europe's economic liberalization.
B.
France's EDF is used to illustrate a result of liberal economies.
C.
The Europe's Union's Barcelona summit is not as productive as expected.
D.
Europe's satellite-positioning system is nowhere near a great success.
【单选题】执行下述程序的输出结果是( )。 #include int power(int x,int y); main() { float a=2.6,b=3.4; int p; p=power((int)a,(int)b); printf("%d\n",p); } int power(int x,int y) { int i,p=1; for (i=y;i>0;i--) p=p*x; return (p...
A.
8
B.
9
C.
16
D.
27
【单选题】Which of the following is NOT mentioned in the text?
A.
Demonstrators are not in favor of Europe's economic liberalization.
B.
France's EDF is used to illustrate a result of liberal economies.
C.
The Europe's Union's Barcelona summit is not as productive as expected.
D.
Europe's satellite-position system is nowhere near a great success.
【单选题】听力原文： Eaton-wielding police in Belgrade clashed with hundreds of student demonstrators trying to march to parliament to support demands for early elections. The student leaders say 50 people were inju...
A.
the president's resignation
B.
early elections
C.
free elections
D.
severe punishment for corrupted officials
【单选题】The angry demonstrators demanded that the military government ______ all political prisoners.
A.
free
B.
must free
C.
freed
D.
would
【单选题】000 demonstrators took to the streets of Kinshasa Thursday to show their support for ______.
A.
the battle led by President Laurent Kabila
B.
the President
C.
the government
D.
the rebels fighting with President Laurent Kabila.
【简答题】（）是以网络图为基础的计划模型，其基本思想是用图来表示组成待执行项目的各种活动之间的顺序关系。
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