某用户变压器容量为500kVA，其计量装置应属于（）类装置。
A.Ⅰ类
B.Ⅱ类
C.Ⅲ类
D.Ⅳ类
参考答案：C
__________________可反映肾小球滤过膜的结构损害程度。
The stones are so heavy. How _____ they _____ to the top of the building without modern machines?
A．do; lift
B．did; lift
C．were; lifted
D．were; lift
