常见的弹簧管式压力表有（）和（）。
参考答案：单圈弹簧管压力表 多圈弹簧管压力表
The National Stadium which looks very magnificent ____ 258,000 square metres in area. [ ]
A. is measuring
B. is measured
C. measured
D. measures
东江酿豆腐在放入砂锅前要进行（）加工。
A.煎制
B.炸制
C.焯水
D.腌制
