已知抛物线x2=4y,点P是抛物线上的动点,点A的坐标为(12,6),求点P到点

题型:解答题

问题:

已知抛物线x2=4y,点P是抛物线上的动点,点A的坐标为(12,6),求点P到点A的距离与到x轴的距离之和的最小值.

考点:抛物线的性质(顶点、范围、对称性、离心率)
题型:解答题

患儿男,6岁,反复发作晕厥、抽搐6年,服用抗癫痫药物1年。发作时表现面色苍白、恶心、呕吐、尿失禁,随即抽搐、意识丧失,一次发作时心电图为室性心动过速。

确诊最有价值的辅助检查是()

A.X线透视或摄片

B.血常规

C.脑脊液检查

D.MRI

E.心电图

题型:解答题

模仿例句组成一个带有宾语从句的复合句.

He wanted to know….

When would the meeting start?

→He wanted to know when the meeting would start.

1. Can you tell me…?

How long will it take to get there?

______________________________________________________________

2. Could you tell me…?

When will you visit the Bamboo Garden?

______________________________________________________________

3. Would you please tell me…?

What should we do next, Mr Wang?

______________________________________________________________

4. You can't imagine….

How excited were they when they received these nice Christmas presents?

______________________________________________________________

5. I want to know…

Will you come back at 8:00 tomorrow?

______________________________________________________________

6. Could you tell me …?

What did he say at the meeting?

______________________________________________________________

7. Could you tell me …?

What were you doing last night?

______________________________________________________________

8. The teacher asked the students….

Were they interested in dinosaurs?

______________________________________________________________

9. Every morning the patients are asked….

Have they had their temperature taken?

______________________________________________________________

10. It's up to you to decide …

How will you go there, by air or by road?

______________________________________________________________

题型:解答题

心脏右前斜位,摄影的角度是

A.45°~55°
B.56°~65°
C.66°~70°
D.71°~80°
E.81°~85°

题型:解答题

男性患者,30岁,既往健康,胸片示右上浸润型肺结核,痰菌(+),应用常规量异烟肼、利福平、乙胺丁醇口服,链霉素肌注,两周后,患者仍有低热盗汗。该患者需要进行下列哪项处置

A.加用糖皮质激素
B.加大抗结核药物剂量
C.进行其他疾病相关的检查
D.继续目前治疗不变
E.安宫牛黄丸每日一次口服

题型:解答题

陈天强申请房屋贷款200万元,年利率5%,期间10年,采取本利平均摊还法按年清偿,则他第2年清偿贷款的本金金额为( )元。(取最接近金额)

A.159000
B.166960
C.171950
D.259000

更多题库