空气斜槽输灰系统中空气斜槽的倾斜度一般为（）。
A.4°～10°；
B.10°～20°；
C.20°～30°；
D.30°～40°。
参考答案：A
—She didn’t come to school yesterday, did she ?
—________.though she was not feeling well.
A．No, she didn’t
B．No, she did
C．Yes, she didn’t
D．Yes, she did
“从严治警”的基本含义是对公安民警严格教育、严格训练、严格管理、严格纪律。
