人民是国家的主人翁，是法治国家的建设者和捍卫者，尊重法律权威是其法定义务和必备素质，尊重法律权威的基本要求包括（）
A. 信仰法律
B. 遵守法律
C. 服从法律
D. 维护法律
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平涂法是用海绵在皮肤上（）。
A. 轻轻涂抹
B. 来回涂抹
C. 反复涂抹
D. 按压涂抹
Cast irons weakness in tension and under shock loading limits its use to low pressure steam, air, oil and low speed water fittingsThe above sentence, most probably means （）.
A. cast iron has weakness
B. cast iron can stand up shock loading
C. cast iron fittings are only suitable in low pressure situation
D. east iron fittings are not suitable in low pressure situatio
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