F因子整合到细菌染色体的途径有()。A、一个B、二个C、三个D、四个

题型:单项选择题

问题:

F因子整合到细菌染色体的途径有()。

A、一个

B、二个

C、三个

D、四个

考点:生物学动物遗传学动物遗传学题库
题型:单项选择题

单词拼写

根据下列句子及所给单词的汉语注释,在横线上写出各单词的正确形式,使句子结构完整,

意思明确。(每空只写一词)

1. Let me wish you every ______ (成功) at the beginning of the new year!

2. The CCTV has been        (广播) the news twice since this morning.

3. The boy who used to be very        (调皮) now has become a film star.

4. In the flood, a big wave        (吞没) the whole garden.

5. A lot of ______(乘客) in the plane lost their lives because of the plane crash.

6. Although this is his first film, everybody thinks        (高度地) of  his acting skills.

7. Whose        (过错) is it to have broken the window?

8. The child didn't know how to        (表现) before the strangers.

9. I am sorry to        (打断) you but there's a phone call for you.

10. Children of all ages should be        (在户外) several hours a day.

题型:单项选择题

人民英雄纪念碑碑文将中国革命的历史最远追溯到 [ ]

A.鸦片战争时期

B.五四运动时期

C.抗日战争时期

D.解放战争时期

题型:单项选择题

患者,男性,62岁,车祸后2小时入院。入院诉前胸及后背部疼痛,呼吸困难,胸闷气短。查体:上肢血压110/95mmHg,呼吸急促,胸壁无创口,左侧胸壁压痛明显,双肺底闻及少量湿啰音,听诊心律绝对不齐,心尖可闻及收缩期杂音,向左腋下放散,腹平软,无压痛,四肢活动自如,无水肿。

(提示胸部X线平片未见明显异常,超声心动图提示:二尖瓣后叶脱垂伴大量反流。心电图:房颤节律,心室率80次/分,未见ST段明显改变。)目前治疗措施包括()

A.利尿

B.静脉应用强心药物

C.静脉应用扩管药物

D.吗啡皮下注射

E.急诊行二尖瓣成形术

F.气管插管呼吸机辅助呼吸

G.冠状动脉造影

题型:单项选择题

男性,30岁。1小时前从2米高处跌落,左腰部着地,伤后腰痛并有肉眼全程血尿和小血凝块。查体:P100次/分,BP110/70mmHg。左腰部皮肤青紫淤血,压痛明显。

下列哪项检查不作为常规项目().

A.B超

B.静脉肾盂造影

C.腹部X线平片

D.CT

E.肾动脉造影

题型:单项选择题

履带式机动车辆在山区作业不得横坡行驶,必须横坡行驶时,坡度不得超过()。

A.15°-20°

B.22°-25°

C.25°-30°

更多题库