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【单选题】
蛋白质分子中的α-螺旋结构属于蛋白质的
A.
一级结构
B.
二级结构
C.
三级结构
D.
四级结构
E.
结构域
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【简答题】We usually use the word "u_________ " to mean "agree to be responsible for a task".
【多选题】巩汉林在《给观众高级的笑》中,高级的笑是指什么?
A.
健康
B.
自然,由衷
C.
重复雷同
D.
拿长辈、亲友开玩笑
【简答题】We usually use the letter 'R' for a (电阻) , 'C' for a (电容)
【单选题】胃蛋白酶的最适pH是
A.
pH 10
B.
pH 8
C.
pH 6
D.
pH 4
E.
pH 2
【简答题】We usually use the computer for sending and ____________ (receive) emails.
【多选题】可以用于取出断头螺丝的方法有( )。
A.
用断头螺丝取出器取出
B.
焊接弯杆取出
C.
焊接六角螺栓取出
D.
用卡簧钳取
【判断题】胃蛋白酶的最适宜作用的pH值为1.5~2.5。()
A.
正确
B.
错误
【简答题】阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳选项,并填写在答题卡上。 China’s growing child modeling industry is under scrutiny(仔细审查) after footage of a 3-year-old being kicked by her mother was widely circulated online. Acco...
【简答题】A. IS Terrorists Release Execution Video of British "Spies” B. The five alleged spies were then shot in the head C. About five British men were accused of spying D. The British foreign office said fiv...
【单选题】Finish the sentence below. One main idea of the article is that ____.
A.
Akash’s family filmed a video while he was at the national spelling bee
B.
Akash might have a high finish in the Scripps National Spelling Bee next year
C.
Akash’s sister, Amrita, also went to the Scripps National Spelling Bee with Akash
D.
Akash is both a Scripps National Spelling Bee competitor and famous entertainer
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