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【单选题】
Priming of the tides occurs（）.A.
at times of new and full Moon
B.
when the Earth，Moon，and Sun are lying approximately on the same line
C.
when the Moon is between first quarter and full and between third quarter and new
D.
when the Moon is between new and first quarter and between full and third quarter
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举一反三
【单选题】Which one is right?
A.
Don ’ t need to s tate the reason for writing the letter.
B.
S ubject is not necessary for the invitation letter .
C.
Avoid making spelling mistakes.
D.
Keep the tone of the letter informal .
【单选题】When an operator is trying to log off the system displays this message: you have running jobs?? What does this mean?（）
A.
One or more processes are running in the background, preventing log off.
B.
One or more processes are paused, requiring operator input prior to logging off.
C.
At least one process is running in the background and it will keep running after the operator logs off
D.
At least one process is running in the background using nohup and it will terminate when the operator logs off
【单选题】Which one is right
A.
shí liǎng diǎn bàn 十 两 点 半
B.
shí èr diǎn bàn 十 二 点 半
C.
èr diǎn bàn 二 点 半
D.
bàn shí èr diǎn 半 十 二 点
【单选题】在C语言的循环语句for、while、do-while中，用于结束本次循环，继续执行下一次循环的语句是______。
A.
switch
B.
break
C.
continue
D.
goto
【简答题】在()中,continue语句的作用是结束本次循环,继续下一次循环。
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