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问题 单项选择题

滚动支架适用于（）。

A.管道上不允许有任何方向的线位移和角位移的支承点

B.管道上不允许有任何方向的垂直位移的支吊点

C.管道上不允许有任何方向的水平位移的支撑点

D.管道上不允许有垂直位移且需减少摩擦力的支撑点

答案

参考答案：D

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单句语法填空，每空只填一词

小题1:The settlement is home to nearly 1, 000 people, many of         left their village homes for a better life in the city.

小题2:To stay awake, he finished a cup of coffee and ordered        .

小题3:The church tower which         _______ _______ (restore) will be open to tourists soon. The work is almost finished.

小题4:My uncle hesitated for a long time _______ he decided to buy a flat, as he was not quite sure whether the price of the house would go up or not.

小题5:Different methods to touch the keys will result _______ different display of the color.
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单项选择题

男，68岁，昨夜突然晕厥，急诊心电图提示：P波规则，79次/分； QRS波群形态和时限正常，节律规则，42次/分；P波与QRS波群互不相关，诊断为

A．窦性心动过缓

B．窦房传导阻滞

C．第二度Ⅰ型房室传导阻滞

D．第二度Ⅱ型房室传导阻滞

E．第三度房室传导阻滞
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