巡检中发现煤质、煤量有问题，要及时汇报（）。
A、队长
B、集控室
C、班长
参考答案：B
—Is that man your uncle?
—No, it ______ be him. He likes wearing jeans. [ ]
A. mustn't
B. can't
C. may not
D. shouldn't
要把当前窗口作为一幅图像复制到剪贴板，一般可按( )键。
A．【Shift+PrintScreen】
B．[PrintScreen]
C．【Ctrl+PrintScreen】
D．[Alt+PrintScreen]
