“色阶”命令是通过设置色彩的明暗度来改变图像的明暗及反差效果的。
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腹痛,呕吐,腹胀,肠鸣音亢进,腹部平片见小肠内有多个大液面可考虑为()
A. 急性胰腺炎
B. 急性肠梗阻
C. 急性胃肠炎
D. 胆石症
E. 溃疡病急性穿孔
教师如果病休超过6个月的时期,当年年度考核结果不合格者,当年不计算教龄。
A. 正确
B. 错误
构造柱一般在墙的某些转角部设置,沿整个建筑高度贯通并与圈梁、地梁现浇成整体。()
A. 正确
B. 错误
On a cisco 1000 series controller-based access point,the alarm led is flashing red,but the other leds are off. What is this access point indicating?()
A. its ip address already exists.
B. it is operating normally.
C. it requires a code upgrade.
D. it has lost contact with the controller.