肌酸激酶-MB在急性心肌梗死发病后几小时开始升高( )
A. 1～2小时
B. 3～8小时
C. 14～18小时
D. 18～24小时
E. 35～36小时
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According to the passage , what happens when the temperature is increased in a closed container holding a liquid
A. The liquid and the gas phases become more similar.
B. The liquid and the gas become less dense.
C. The container expands.
D. The liquid evaporates out of the container.
运算符___________的优先级最高。
A. .[ ]
B. +=
C. :
D. ++
设有数组定义：char array[]=”student”;则数组所占的存贮空间为__________。
A. 6个字节
B. 7个字节
C. 8个字节
D. 9个字节
SQL语言中，能正确实现级联删除的命令是
A. ON DELETE CASCADES
B. ON DELETE RESTRICTED
C. ON DELETE NULLIFIES
D. ON DELETE DEFAULT
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