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【单选题】
在神经-肌肉接头处的兴奋传递中,影响神经递质释放的主要因素是
A.
钙离子
B.
钠离子
C.
钾离子
D.
氯离子
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参考答案:
举一反三
【单选题】“我翻开历史一查,这历史没有年代,歪歪斜斜的每页上都写着“仁义道德”几个字”。这句话出自鲁迅作品( )。
A.
铸剑
B.
狂人日记
C.
从百草园到三味书屋
D.
阿Q正传
【单选题】以下不属于直接筹资的是( )。
A.
发行股票
B.
向银行借款
C.
发行债券
D.
投资人投入资本
E.
赊购商品
【单选题】茶字是由哪个汉字演变出来的呢?
A.
B.
C.
【单选题】在连续供氧系统氧气瓶出口与飞机机身蒙皮之间的管道中,设有一个释压活门, 其功用是
A.
当氧气瓶压力过低时打开,使外界空气进入氧气瓶
B.
当氧气瓶压向座舱供氧时,向机外释放多余的氧气
C.
当氧气瓶压力超过规定值时打开,向机外释放氧气
D.
当氧气瓶关断活门关闭时,自动向机外释放氧气
【单选题】A 31-year-old man experienced chest pain, became increasingly dyspneic and nauseated, and lost consciousness multiple times. Seven days after the appearance of these symptoms, he was found dead in his...
A.
Coronary atherosclerosis
B.
Dilated cardiomyopathy
C.
Disseminated tuberculosis
D.
Systemic sclerosis
E.
Malignant melanoma
F.
Man syndrome
G.
Takayasu arteritis
【单选题】A 33-year-old woman had increasing dyspnea with cough for the past 10 years. Over the past 2 days, her cough has become productive of chunks of gelatinous sputum. And she has been choked and died. The...
A.
Centriacinar emphysema
B.
Panacinar emphysema
C.
Chronic bronchitis
D.
Asthma
【单选题】下列各项筹资中,既属于债务筹资又属于直接资的是( )。
A.
发行普通股票
B.
发行债券
C.
银行借款
D.
融资租赁
【单选题】A 25-year-old man was found dead at home by the apartment manager, who had been called by the decedent’s employer because of failure to report to work for the past 3 days. An external examination by ...
A.
Elevated anti–streptolysin O titer
B.
Positive ANCA serology
C.
Increased creatine kinase–MB (CK-MB) fraction
D.
High double-stranded DNA autoantibody titer
E.
Positive blood culture for Staphylococcus aureus
【单选题】“我”把爸爸告到了( )法院。
A.
当地
B.
怪老头国
C.
耗子国
【简答题】【图片】图,一杆水平放置,且可饶O轴旋转,初始静止,现有一子弹垂直射向杆的底端,已知杆的质量为12千克,杆长2米,子弹质量4千克,速度为10米每秒,碰撞后子弹和杆粘在一起共同绕O轴转动,则他们一起的角动量为( )
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