CONSTANT T2：std_logic <= ’0’;
第1题：
●when a string constant is written in C program，the compiler creates (75) of characters containing the characters of the string，and terminating it with"＼0"．
(75) A．a group
B．an array
C．a set
D．a series
【解析】译文：当在C语言中书写一个字符串变量时，编译器创建一个字符 数组 ，它包含了字符串中的字符，并以"＼0"结尾。
第2题：
when a string constant is written in C program, the eompiler creates(75)of characters containing the characters of the string, and terminating it with "\0".
A．a group
B．an array
C．a set
D．a series
第3题：
事务T0、T1和T2并发访问数据项A、B和C，下列属于冲突操作的是______。
A．T0中的read(Ａ)和TO中的write(Ａ)
B．T0中的read(Ｂ)和T2中的read(Ｃ)
C．T0中的write(Ａ)和T2中的write(Ｃ)
D．T1中的read(Ｃ)和T2中的write(Ｃ)
第4题：
Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is ______.
A.entirely constant pressure
B.entirely constant temperature
C.a combination of constant volume and constant pressure
D.a combination of constant temperature and constant pressure
第5题：
When a string constant is written in C program, the compiler creates ______ of characters containing the characters of the string, and terminating it with "\0".
A．a group
B．an array
C．a set
D．a series
第6题：
If the square root of t is a real number, is the square root of t positive?
(1) t＞0
(2) t2＞0
) is used, a positive number has two square roots, a positive root and a negative root. For example, if t is 4, then it has two square roots, 2 and -2. So we can eliminate A and D.第7题：
A、T1，N0，M0（Ⅰ期）
B、T1，N1，M0（Ⅱa期）
C、T2，N1，M0（Ⅱb期）
D、T2，N1，M1（Ⅳ期）
E、T2，N2，M0（Ⅲa期）
第8题：
事务T0、T1和T2并发访问数据项A、B和C，下列属于冲突操作的是______。
A)T0中的read
(A)和T0中的write(A)
B)T0中的read
(B)和T2中的read
(C)
C)T0中的write(A)和T2中的write(C)
D)T1中的read(C)和T2中的write
A．
B．
C．
D．
第9题：
______is a precaution which contributes to avoiding trouble under normal operating conditions.
A.Constant inspection
B.Keeping constant load
C.Remaining constant temperature
D.Varying speed
第10题：
VHDL语言中std_logic类型取值（）表示高阻，取值‘X’表示不确定。