作图题：画出三相五柱式电压互感器的接线方式图。
参考答案：
It is ______ work of art that the museum has decided to buy and keep it .
A such an unusual B a so unusual C such unusual D so unusual
尿毒症时，早期常出现的临床症状是
A．贫血
B．出血
C．高血压
D．心力衰竭
E．胃肠道症状
