智慧职教: bleed air regulator

The viscosity regulator controls （） in order to provide oil at the correct viscosity for combustion.

The transistor inside the switching regulator works in a linear state. A: Correct B: Wrong

In a linear regulator, the purpose of using the power transistor is to ( ). A: Increase output voltage B: Increase output current

BRI1 is a regulator in the BR signaling pathway. A: positive B: negative C: Both A and B D: None of the above

In which area will the RNA polymerase attach allowing transcription to occur? A: regulator B: promoter C: operator D: terminator

The static flow chart of DCS in alkaline washing tower includes ( ) A: alkaline washing tower T_51501 B: Regulator FV_51503 C: Feed valve XV51501 D: discharge pump P_5101

A ____ is mounted on the lube oil cooler which senses the temperature of the lubricating oil and regulates the flow of either the lubricating oil or the cooling water accordingly. A: magnetic switch B: regulator C: thermostatic valve D: expansion valve

Which of the following statements is right? A: RB exerts anti-proliferative effects by controlling the G1-to-S transition of the cell cycle B: RB is a key positive regulator of the cell cycle C: The TP53 was the first tumor suppressor gene to be discovered by the study of retinoblastoma D: Malignant transformation is only derived from one of the normal RB alleles inactivated

一个肿性纤维化（cystic fibrosis）病人，其细胞中的囊性纤维化跨膜传导调节因子（cystic fibrosis transmembrane conductance regulator，CFTR）基因发生了一个三核苷酸删除突变，导致CFTR蛋白的第508位苯丙氨酸残基删除，继而使该突变蛋白在细胞内折叠错误。该病人体内细胞识别到该突变蛋白，并通过添加泛素分子对其进行修饰，试问被修饰后的突变蛋白的命运如何 A: 泛素将校正突变的影响，从而使突变蛋白的功能恢复正常 B: 分泌到细胞外 C: 进入贮存装泡 D: 被蛋白酶体降解 E: ​被细胞内的酶修复