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【判断题】
指令系统是计算机硬件的语言系统,也称为机器语言。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】How do children in America celebrate Valentine's Day?
A.
Send flowers.
B.
Send candy.
C.
Send valentine cards.
D.
All of the above.
【单选题】How was Valentine punished?
A.
He was made to serve in the army
B.
He was driven out of the country
C.
He was put into prison and sentenced to death.
D.
He was made to remain single.
【单选题】What ____ Tom and Jim usually ____ on Sundays?
A.
does; does
B.
do; does
C.
does; do
D.
do; do
【单选题】设单位负反馈系统的开环传函为 G ( s )=10/ s ( 0.1 s + 1 )( 2 s + 1 ) , 当输入为 r ( t )=2 t 时系统的稳态误差为( )。
A.
0
B.
0.1
C.
0.2
D.
2
【单选题】In order to take advantage of the sales tax rebate, travelers are ______ to present all receipts for purchases made in the country.
A.
confirmed
B.
determined
C.
acquired
D.
supposed
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