【简答题】植物传染性病害的流行必须具备3个基本条件: 病原物、( ) 和 环境条件
【单选题】根据以下答案,回答题
E.
远曲小管和集合管 小管液重吸收率与肾小球滤过率具有等比关系的部位是( )。 查看材料
【简答题】A.近端小管 B.髓袢降支细段 C.髓袢升支细段 D.髓袢升支粗段 肾小管液中NaCl被显著浓缩的部位是 A. B. C. D.
【单选题】― the shop for several years? ―No, it one year ago. [ ]
A.
Has; been open; opened
D.
Was, opened; was opened
【判断题】Current liabilities are obligations due within one year or within the company's normal operating cycle if it is longer than one year.
【单选题】He _____ play the piano now, but he _____ play it one year ago. [ ]
【单选题】I bought a computer last year. I ______ it for one year.
【简答题】A.近端小管 B.髓袢降支细段 C.髓袢降支粗段 D.髓袢升支细段 对水分容易通透对NaCl和尿素不容易通透的肾小管是