问题
单项选择题 B型题
分泌盐酸的是()
A.主细胞
B.壁细胞
C.黏液细胞
D.G细胞
E.嗜银细胞
答案
参考答案:B
解析:主细胞分泌胃蛋白酶原和凝乳酶原;壁细胞分泌盐酸和抗贫血因子;黏液细胞分泌碱性黏液,有保护黏膜、对抗胃酸腐蚀的作用;胃窦部有G细胞分泌促胃液素;胃底部尚有功能不明的嗜银细胞。
分泌盐酸的是()
A.主细胞
B.壁细胞
C.黏液细胞
D.G细胞
E.嗜银细胞
参考答案:B
解析:主细胞分泌胃蛋白酶原和凝乳酶原;壁细胞分泌盐酸和抗贫血因子;黏液细胞分泌碱性黏液,有保护黏膜、对抗胃酸腐蚀的作用;胃窦部有G细胞分泌促胃液素;胃底部尚有功能不明的嗜银细胞。
76. (1) is a channel’s capacity which directly reflects the data transfer rate of the channe1. (2) functions in a NetWare network which is used to define addressing schemes. (3) is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains. (4) is the popular LAN developed under the direction of the IEEE802.3. (5) is a device which enables digital microcomputers to communicate across analog telephone lines. |
(4)
A.Token Ring
B.Token Bus
C.Ethernet
D.FDDI