皮皮学，免费搜题
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搜题
【单选题】
细菌的革兰染色性不同主要是因为A.
形态不同
B.
营养需要不同
C.
生理功能不同
D.
细胞壁结构不同
E.
致病性不同
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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 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, pring 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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