【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】提前结束本次循环,继续执行下一次循环的语句是:( )。
【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】棵完全二叉树中有 1000 个节点,其中度为 1 的节点个数是( )。
【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
D.
bàn shí èr diǎn 半 十 二 点
【单选题】表示结束本次循环,继续执行下一次循环的语句是___。
【判断题】Log off when you leave your computer.
【单选题】在C语言的循环语句for、while、do-while,用于结束本次循环,继续执行下一次循环的语句是__
【单选题】Someone could pretend to be you if you don’t log off when ...