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【单选题】
关于螺旋天线，下列叙述正确的是【】。A.
轴向模螺旋天线是一种驻波天线
B.
轴向模螺旋天线具有圆极化特性
C.
法向模螺旋天线是一种行波天线
D.
法向模螺旋天线具有圆极化特性
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【简答题】句型转换。 1. What does Mr. King think of shows? (改为同义句) _______ _______ Mr. King _______ shows? 2. Her sister can't stand cold weather. (就画线部分提问) _______ _______ stand cold weather? 3. The littl...
【简答题】为探究“温度对唾液淀粉酶催化作用的影响”，小丽同学设计了如下实验： 步骤一：收集唾液并与蒸馏水按1∶1的体积比制成唾液稀释液； 步骤二：取可溶性淀粉1克，放入烧杯中，加入99毫升，搅拌，缓慢加热，溶解，制成1%的淀粉溶液并冷却至室温； 步骤三：取4支洁净的试管编上号，按表中物质的量依次加入各试管并振荡，放置在一定温度下的水浴中保存10分钟； 步骤四：取出试管，分别滴加1滴体积分数为0.4%的碘酒溶...
【简答题】为探究“温度对唾液淀粉酶催化作用的影响”，小丽同学设计了如下实验： 步骤一：收集唾液并与蒸馏水按1：1的体积比制成唾液稀释液； 步骤二：取可溶性淀粉1克，放入烧杯中，加入99毫升蒸馏水，搅拌，缓慢加热，溶解，制成1%的淀粉溶液并冷却至室温； 步骤三：取4支洁净的试管编上号，按表中物质的量依次加入各试管并振荡，放置在一定温度下的水浴中保存10分钟； 步骤四：取出试管，分别滴加1滴体积分数为0.4%碘...
【单选题】____and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.
A.
To be tired
B.
Tired
C.
Tiring
D.
Being tired
【单选题】What does the author seem to think of King Henry?
A.
He was the best king England had ever had.
B.
He was unfair and cowardly.
C.
He was just as evil as King Richard.
D.
He was a better ruler than King Richard.
【单选题】What does the author seem to think of King Herry?
A.
He was the best king England had ever had.
B.
He was unfair and cowardly.
C.
tie was just as evil as King Richard.
D.
He was a better ruler than King Richard.
【简答题】12 Passage Two Questions 20 to 22 are based on the passage you have just heard. 20.A) A package of ideas formally presented. B) A short presentation clearly delivered. C) A natural and spontaneous sty...
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