压后快排体系不利于油气层保护。()
参考答案:错
解析:压后快排体系利于油气层保护。
My cousin is a secretary. She ______in that company for over six years.
A.will work
B.is working
C.has worked
D.works
在窗体上添加一个命令按钮,名为Command1,事件过程如下,则执行结果是______。
A) 2 4 6 8 B) 1 3 5 7 C) 3 6 6 12 D) 4 8 12 16