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问题 填空题

ATM协议中，会聚子层CS被定义成两个子层，即 【20】 和公共部分会聚子层 (CPCS)。

答案

参考答案：特定业务会聚子层(SSCS)

解析： ATM协议中，会聚子层CS被定义成特定业务会聚子层(5SCS)和公共部分会聚子层(CPCS)两个子层。

填空题

阅读短文，用所给单词的适当形式填空。

     A telephone bell suddenly woke Mrs Whiteup.  She turned on the lighht and     1    (go) toanswer

it.  “Your mother _  2   _ (be) ill sincelast night,.” said her father.   I     3     (take)her to hospital. Can

you come back and help me?"Mrs White agreed.    

     She knew she couldn't come back by suppertime. The weather was hot, and she was afraid themilk

would get bad. She brought out a piece ofpaper and wrote, "No person     4    .(be) intoday.  Please

don't leave anything here. "  

     When she retumed home at night, she     5    (find) the rooms were empty. She sawa note on the floor. It said, "Thanks a lot. Wedidn't leave anything here. "

1.              2.             3.             4.              5.               

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单项选择题

双胍类降糖药主要作用机制为

A．抑制胰高血糖素分泌

B．抑制葡萄糖异生

C．加速糖的无氧酵解，促进外周组织摄取葡萄糖

D．刺激胰岛素分泌

E．抑制生长素分泌
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