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【单选题】
He was arrested on charges of corruption and _____ of power .
A.
use
B.
attribute
C.
abuse
D.
appointment
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举一反三
【单选题】----He was nearly drowned once . ---- When was ______? -----_____ was in 2000 _____he was in middle school .
A.
that; It ; when
B.
this ;This; that
C.
that; This; when
D.
that; It ; that
【判断题】f(t)=cos(10t)+cos(30t)是否是周期信号。
A.
正确
B.
错误
【单选题】以下各选项中的代码段执行后,变量 y 的值不为 1 的是
A.
int x=10,y=0; if(x=y) y=1;
B.
int x=5,y=0; if(x) y=1;
C.
int x=5,y=0; if(5) y=1;
D.
int x=5,y=10; if(x=y) y=1;
【单选题】以下各选项中的代码段执行后,变量y的值不为1的是
A.
int x=5,y=0; if(x) y=1;
B.
int x=5,y=0; if(5) y=1;
C.
int x=10,y=0; if(x=y) y=1;
D.
int x=5,y=10; if(x=y) y=1;
【单选题】So seriously _____ in the accident that he was sent to hospital at once.
A.
he was wounded
B.
was he hurt
C.
he did injure
D.
did he hurt
【单选题】--- He’s never late for school, _____ he? ---_______________, but once he asked for a sick leave(病假).
A.
has;No
B.
has; Yes
C.
is; Yes
D.
is, No
【单选题】周期信号cos(10t)-cos(30t)和ej30t的周期T分别为____和____.
A.
pi/10;pi/5
B.
pi/5;pi/10
C.
pi/5;pi/5
D.
pi/5;pi/15
【单选题】----- He was nearly drowned once. ----- When was ____? ------ _____was in 1998 when he was in middle school.
A.
that; It
B.
this; This
C.
this; It
D.
that; This
【简答题】He once worked in a company, ______ he went abroad for further study. A. from which  B. after that  C. after which  D. from this
【判断题】f(t)=cos(10t)-cos(30t)是为周期信号
A.
正确
B.
错误
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