皮皮学，免费搜题
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【单选题】
计划活动是管理者实施控制的()。A.
抓手
B.
工具
C.
手段
D.
标准
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皮皮学刷刷变学霸
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【多选题】(多选)两列频率相同、振幅均为A的简谐横波P、Q分别沿x轴正方向和x轴负方向在同一介质中传播,两列波的振动方向均沿y轴.某时刻两波的波面如图6所示,实线表示P波的波峰、Q波的波谷;虚线表示P波的波谷、Q波的波峰.a、b、c为三个等距的质点,d为b、c中间的质点.下列判断正确的是( )
A.
质点a的振幅为2A
B.
质点b始终静止不动
C.
图示时刻质点c的位移为0
D.
图示时刻质点d的振动方向沿－y轴
【单选题】Luteinizing hormone exerts which one of the following physiologic effects?
A.
It triggers completion of the second meiotic division by secondary oocytes.
B.
It triggers ovulation.
C.
It suppresses release of estrogens.
D.
It induces primary follicles to become secondary follicles.
E.
It induces the corpus luteum to become corpus albicans.
【单选题】关于心房肌复极的描述，不正确的是
A.
Ta波的方向与P波的方向相反
B.
先除极的部分最先复极
C.
Ta波振幅较小
D.
心率增快时，Ta波可增大
E.
后除极的部分较先复极
【单选题】What is the role of luteinizing hormone (LH) in the female?
A.
It causes release of FSH from the anterior pituitary.
B.
It maintains the secondary sex characteristics.
C.
It allows the frequency of pulses of GnRH to increase.
D.
It causes ovulation.
【单选题】What effect does luteinizing hormone have?
A.
It stimulates the growth of a few follicles.
B.
Stimulates ovulation and maintains the corpus luteum.
C.
It prepares the uterus for pregnancy.
D.
It establishes and maintains the secondary sex characteristics.
【单选题】In males, what is the function of luteinizing hormone (LH)?
A.
It stimulates interstitial cells in the testes to produce testosterone.
B.
It stimulates sustentacular cells in the testes to produce sperm.
C.
It promotes the maturation of spermatozoa.
D.
It stimulates the anterior pituitary to release FSH.
【单选题】What is the function of luteinizing hormone?
A.
It stimulates the interstitial (Leydig) cells to produce testosterone.
B.
It stimulates sustentacular (Sertoli) cells to produce sperm.
C.
It stimulates the anterior pituitary to release follicle-stimulating hormone.
D.
It stimulates the ovary to develop follicles.
【简答题】luteinizing hormone 翻译成中文
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