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【单选题】
蛋白质中多肽链形成 α- 螺旋时,主要靠下列哪种键( )A.
疏水键
B.
氢键
C.
离子键
D.
二硫键
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【单选题】下列关于十二指肠的描述中,错误的是
A.
为小肠的起始部
B.
分上部、降部和水平部三部分
C.
上部起始端为十二指肠球
D.
降部有十二指肠大乳头的开口
E.
整段呈“C”字型包绕胰头
【单选题】Safety of navigation is dealt [delt] with in chapter [ˈtʃæptə(r)] V of the SOLAS Convention which identifies certain navigation safety services which should be provided by Contracting Governments an...
A.
in contrast to
B.
in compliance with
C.
. the essence of
D.
representing
【简答题】I. Directions: Fill in each of the blanks with an appropriate word from the box. as about matter dependent those follow excess result relevant distinctive The Chinese way of eating is characterized by...
【单选题】若将如图所示电路化简为等效电压源形式,则电压源电压Us和内阻R0为( )
A.
Us=6V，R0=6Ω
B.
Us=12V，R0=8Ω
C.
Us=30V，R0=6Ω
D.
Us=42V，R0=6Ω
【简答题】It is not possible to describe the entire concept of political propaganda in media in this single article. Chomsky has been actively involved in political debates ever since the Vietnam War and regard...
【简答题】In general, our society is becoming one of giant enterprises directed by a bureaucratic( 的) management in which man becomes a small, well-oiled cog in the machinery. The oiling is done with higher...
【单选题】下列关于十二指肠的描述中,错误的是
A.
为小肠的起始部
B.
分为上部、降部和水平部三部分
C.
上部起始端为十二指肠球
D.
降部有十二指肠大乳头的开口
E.
整段呈“C”字型包绕胰头
【单选题】若将如图所示电路化简为等效电压源形式,则电压源电压US和内阻RS为( )
A.
US=6V，RS=6Ω
B.
US=12V，RS=8Ω
C.
US=30V，RS=6Ω
D.
US=42V，RS=6Ω
【单选题】下列关于十二指肠的描述错误的是( )
A.
呈 C 形包绕胰体
B.
上部又称球部
C.
降部前外侧壁有十二指肠大乳头
D.
降部于第1-3腰椎的右侧及右肾内侧缘前面下降
E.
水平部续空肠
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