如图所示,A是悬挂在弹簧测力计下的条形磁铁,B是螺线管,当S闭合后,电流表的示数

题型:填空题

问题:

如图所示,A是悬挂在弹簧测力计下的条形磁铁,B是螺线管,当S闭合后,电流表的示数将 ______,弹簧测力计的示数将 ______.(选填“变大”、“变小”或“不变”)

考点:磁极间的相互作用安培定则(右手螺旋定则)影响电磁铁磁性的因素并联电路的电流规律
题型:填空题

按要求进行句型变化。

1. They moved to New York a month ago. (对划线部分提问) 

     ___________ ___________ they ___________ to New York?

2. They enjoyed the concert very much. (对划线部分提问) 

    ___________ ___________ they ___________ the concert?

3. Sophie has to look after her sick sister at home.(变成一般疑问句)

    ___________ Sophie ___________ to look after her sick sister at home?

4. Jim is 15 years old. Kate is 14 years old.(合并成一句) 

    Jim is ___________ ___________ Kate.

5. We often go hiking in spring. (用tomorrow改写) 

     We ___________ ___________ ___________ tomorrow.

6.  It took my mom five hours to make the big meal. (同义句) 

      My mom ___________ five hours ___________ the big meal.

7.  It's two hours'walk from here to the subway station. (对划线部分提问)

      ___________ ___________ is it from here to the subway station?

8. 天下雨时,我打的去上学。

      When it ___________, I ___________ a taxi to work.

9.   至于今天的作业,你最好问问萨姆。

      ___________ for today's homework, you'd better ask Sam.

题型:填空题

血沉加快见于()。

A.风湿热活动期

B.结核病静止期

C.良性肿瘤

D.心绞痛

E.恶性肿瘤

题型:填空题

二期梅毒的皮疹是下列哪一种()

A.软下疳

B.扁平湿疣

C.尖锐湿疣

D.树胶肿

E.结节性梅毒疹

题型:填空题

n阶行列式Dn=0的必要条件是()。

A.以Dn为系数行列式的齐次线性方程组有非零解

B.Dn中有两行(或列)元素对应成比例

C.Dn中各列元素之和为零

D.Dn中有一行(或列)元素全为零

题型:填空题

试述原发性肝癌伴癌综合征的主要表现。

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