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【单选题】
在机构中，与其他约束相重复而不起限制运动作用的约束为__________ 。A.
虚约束
B.
局部自由度
C.
复合铰链
D.
真约束
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举一反三
【简答题】学习通中的任务点,未完成的任务点是( )色圆点,已完成的任务点是( )色圆点。
【单选题】护士李小姐为慢性乙型肝炎病人抽血后，不慎用注射器将自己示指刺破。护士小李不正确的做法是
A.
挤出伤口的血液
B.
用流水冲洗
C.
边挤边冲
D.
立即注射乙肝免疫球蛋白
E.
立即注射乙肝疫苗
【单选题】Ice floats because it is not as dense as water.
A.
冰可漂浮在水面上是因为冰不像水那么重。
B.
冰浮起是因为它的密度比水的密度小。
C.
冰可漂浮是因为冰不像水那么稠密。
【简答题】Ice is not as dense as water and it therefore floats.
【单选题】Ice floats on water because it is not quite as dense as water is. The chemical formula for water is H20. If ice were denser than water, then lakes and other bodies of water would freeze from the botto...
A.
Ice floats on water because it is not quite as dense as water is.
B.
The chemical formula for water is H20.
C.
If ice were denser than water, then lakes and other bodies of water would freeze from the bottom up during the winter.
D.
Fish would suce and ually die.
【单选题】He had a strange hairstyle and he instantly became the ________ of attention the moment he stepped into the classroom.
A.
aim
B.
focus
C.
direction
D.
point
【单选题】护士李小姐为慢性乙型肝炎病人抽血后,不慎用注射器将自己示指刺破。护士小李不正确的做法是
A.
挤出伤口的血液
B.
用流水冲洗
C.
边挤边冲
D.
立即注射高效的免疫球蛋白
E.
立即注射乙肝疫苗
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