【单选题】对于蛋白质α螺旋的叙述,哪一项是不正确的
【单选题】特种设备定期检验的检验项目根据()确定。
【单选题】特种设备定期检验的检验项目根据()确定。
【单选题】China’s housing price becomes one of the hottest topics during the Two Sessions, ________ most ordinary Chinese people find it more and more difficult to buy a flat in cities.
【单选题】蛋白质的α-螺旋存在于蛋白质的几级结构: