压力容器构成中有下列这些元件（）
A.壳体
B.支座及连接件
C.密封元件
D.开孔
E.水泥基础
参考答案：A, B, C, D
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Because excessively hunting has depleted many wildlife species, game preserves are beingestablished.
A．excessive hunting
B．hunting excessively
C．hunting was excessive
D．they hunted excessively
