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【单选题】
Our dog Zip is always bringing things home for us to keep! Many of them were toy bears, lambs and ducks. We never could 1 the owners. One day Dad was reading the paper. "Listen to this, everybody,” he said. "To the person who took a teddy bear from a child's wagon -please bring back the toy bear. Our two-year-old son is very 2 ” "Zip has been 3 again,” said Anita. “ Yes”, said Dad. “Well, the paper gives the address. This time I can take back Zip's 4 ." "Do you think it 5 to do that?” Mom asked. “If you tell about Zip, who will believe you?” “ I will wait until dark. Then I'll just put the teddy beat at the front door and walk away. 6 will see me.” Dad's idea 7 worked. He put teddy at the gate. He turned to walk away and knocked into a chair! Dad started to run. But he didn't get very far. The gate lights came on. A man threw open the door.“ 8 is going on here?” he called out. Dad didn't even try to 9 . He just wanted to get away. Then the man saw the bear. He shouted after Dad. "How 10 can you get?" he said. "Taking toys from babies!”
A.
pay
B.
agree
C.
find
D.
choose
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【判断题】二次灌浆后,地脚螺栓即可进行紧固。
A.
正确
B.
错误
【单选题】钢管脚手架在进行试验时,紧固螺栓的扭力矩应为()。
A.
40N·m
B.
50N·m
C.
60N·m
D.
70N·m
【单选题】如图所示,质量为m的物体置于倾角为θ的斜面体上,物体与斜面体间的动摩擦因数为μ,在外力作用下,斜面体以加速度a沿水平方向向左做匀加速运动,运动中物体m与斜面体相对静止。则关于斜面体对m的支持力和摩擦力的做功情况,下列说法中错误的是( )
A.
支持力一定做正功
B.
摩擦力一定做正功
C.
摩擦力可能不做功
D.
摩擦力可能做负功
【单选题】所谓社会运行机制,是指社会运行中所遵循的规律或所形成的模式。社会学所关注的社会运行的几大主题是( )。
A.
需要—互动—管理与控制—变迁与进步
B.
需要—互动—管理与控制—稳定与发展
C.
互动—管理与控制—发展
D.
需要—互动—变迁与进步
【单选题】3-6岁儿童注意的特点是( )
A.
无意注意占优势,有意注意逐渐发展
B.
有意注意占优势,无意注意逐渐发展
C.
无意注意和有意注意都没什么发展
D.
无意注意和有意注意同步发
【简答题】紧固螺栓分初拧﹑终拧两次进行,初拧应采纳手动扭矩手或专用定扭电动扳手,初拧值应为预拉力标准值的()左右. A﹑30% B﹑40% C﹑50% D﹑60%
【单选题】下列事例中,力对物体做功的是(  )
A.
小明将静止在地面的足球踢出
B.
小明把杠铃举在一定高度静止不动
C.
小明用力推汽车,但汽车不动
D.
小明背着书包在水平面上匀速前进
【单选题】下列关于功和能的说法中,正确的是: [     ]
A.
两个物体中举得越高的物体具有的重力势能一定越大
B.
物体不做功,说明它一定不具有能
C.
质量相同的两个物体,速度大的物体动能大
D.
一石块运动时的机械能一定比它静止时的机械能大
【单选题】3~6岁儿童注意的特点是( )
A.
无意注意占优势,有意注意逐渐发
B.
有意注意占优势,无意注意逐渐发展
C.
无意注意和有意注意都没什么发展
D.
无意注意和有意注意同步发展
【单选题】扭剪型高强度螺栓的紧固分两次进行,第一次为初拧,紧固到螺栓标准预拉力的 ( )。
A.
50%~80%
B.
60%~80%
C.
50%~90%
D.
60%~90%
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