已知平面ABC在H面和V面的投影均为一线段,则平面ABC为()
A、一般位置面
B、侧垂面
C、侧平面
D、正平面
参考答案:C
Many flowers ________ in our school last year,and they made our school a beautiful garden.
A.plant
B.planted
C.have planted
D.were planted
可摘局部义齿中塑料基托厚度应该是
A.0.5mm
B.0.8mm
C.2.0mm
D.1.2mm
E.2.5mm