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曳引钢带钢带的涨紧力相互误差在（）以内，曳引钢丝绳涨紧力误差在（）以内。
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水棚应设在巷道的直线段内，与巷道的交叉口、转弯处距离不得小于（）米。
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儿童运动障碍疾病中，"胎儿在母亲产道内头位产时，因肩部不易娩出而被用力牵拉头部导致"属于（）
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酸枣仁汤中养肝血、安心神的药物是（）。
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日本与中国的时差是多少？
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有关通气/血流比例，哪项不正确（）
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以20世纪40年代（）的出现为转折点，科学从被赞扬的地位进入了备受争议的地位。
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室外变、配电装置距堆场、可燃液体储罐和甲、乙类厂房库房不应小于（）。
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As Christmas is coming, there are presents to be bought, cards to be sent, and rooms to be cleaned. Parents are ___1___ with difficult jobs of hiding presents from curious young children. If the gifts are large, this is sometimes a real ___2___. On Christmas Eve, young children find the excitement almost unbearable. They are torn between the wish to go to bed early so that Father Christmas will bring their presents quickly and the wish to stay up late so that they will not miss the fun. The wish for gifts usually proves stronger. But though children go to bed early, they often lie awake for a long time, hoping to get a short ___3___ at Father Christmas. Last Christmas, my wife and I successfully hid a few large presents in the storeroom. I ___4___ the moment when my son, Jimmy, would ask me where that new bike had come from, but ___5___ he did not see it. On Christmas Eve, it took the children hours to go to sleep. It must have been nearly ___6___ when my wife and I went quietly into their room and began filling stockings. Then I pushed in the ___7___ I bought for Jimmy and left it beside the Christmas tree. We knew we would not get much sleep that night, for the children were ___8___ to get up early. At about five o’clock the next morning, we were woken by loud sounds coming from the children’s room — they were shouting excitedly! Before I had time to get out of bed, young Jimmy came riding into the room on his new bike, and his sister, Mary, followed close behind pushing her new baby carriage. Even the baby arrived. He moved ___9___ the hands and knees into the room dragging a large balloon behind him. Suddenly it burst. That woke us up ___10___. The day had really begun with a band! ___1___内应选（） ___2___内应选（） ___3___内应选（） ___4___内应选（） ___5___内应选（） ___6___内应选（） ___7___内应选（） ___8___内应选（） ___9___内应选（） ___10___内应选（）
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根据《中华人民共和国人民警察法》规定，下列哪些是公安机关人民警察应当履行的职责？（）