Unlike the globe valve, gate valves give full bore flow without change of direction, such
A. The globe valve may be suitable for partially open operation
B. The globe valve will give full bore flow with change of direction
C. The gate valve gives full bore flow with change of direction
D. The gate valve is suitable for full bore operation only
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When a ship in loaded condition floats at arbitrary water line, its displacement is to the
A. equal
B. larger
C. smaller
D. equivalent
长于治风痰的药物是
A. 天南星
B. 半夏
C. 贝母
D. 桔梗
E. 瓜萎
行政决策是指国家行政机关发挥行政管理职能做出处理国家公共事务的决定。()
权变组织理论认为,组织管理中不存在最好的方法。()