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【判断题】
洞口构造一中，在洞口中心位置引注以下内容：JD 2 400×300 +3.100 4Φ14， +3.100代表洞口顶部距本结构层面3.1mA.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】若某企业连续三年按变动成本法计算的税前利润分别为 10 000 元、 12 000 元和 11 000 元,则下列表述中正确的是( )。
A.
第三年的销量最小
B.
第二年的销量最大
C.
第一年的产量比第二年少
D.
第二年的产量比第三年多
【单选题】Which of the following statements about the structure of myosin is wrong?
A.
Myosin (Mr 520,000) has six subunits: two heavy chains (each of Mr 220,000) and four light chains (each of Mr 20,000).
B.
The heavy chains account for little of the overall structure. At their carboxyl termini, they are arranged as extended α helices, wrapped around each other in a fibrous, left-handed coiled coil similar to that of α-keratin. At its amino terminus, each heavy chain has a large globular domain containing a site where ATP is hydrolyzed.
C.
The light chains are associated with the globular domains.
D.
When myosin is treated briefly with the protease trypsin, much of the fibrous tail is cleaved off, dividing the protein into components called light and heavy meromyosin.
【简答题】教师管理的途径() A.强化教师 B.培养教师 C.管理教师 D.保育教师 E.吸引教师
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