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【单选题】
CC2530有几中断源？将中断源划分成几组？每组有多少个中断源？A.
16,4,4
B.
18 ,6,3
C.
20,5,4
D.
24,6,4
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【单选题】若有定义语句: struct a { int a1; int a2; }; struct a a3; 以下赋值语句正确的是( )
A.
a.a1=4;
B.
a2=4;
C.
a3.a2=5;
D.
a3={4,5};
【单选题】When manual handling heavy objects
A.
you should bend your knees before lifting
B.
you should not lift any object over 15kgs on your own
C.
you should use a carrying device to lift an object over 15kgs
D.
All of the above
【单选题】Mr. Houghton was always talking about the clean life and the virtues of fresh air. "The clean life" here means ____.
A.
a life keeping all things around you tidy and clean
B.
a life without vices or moral sins
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