在GT800集群系统中，移动台在集群业务呼叫过程中的切换和重选行为正确的是（）A.调

选择正确的修辞方法。

百灵鸟在果园里欢乐地歌唱。   [ ]

A、比喻

B、拟人

C、夸张

诊断窦性心动过缓的必需心电图指标除外 （）

A.心室率小于60次／分

B.窦性P波

C.P波在Ⅱ、aVF直立

D.QRS波群间期≤0.11秒

E.P-R间期≥0.12秒

肿大的甲状腺与其他颈前包块的鉴别中，最重要的是（）。

A.甲状腺表面光滑

B.甲状腺位于甲状软骨下方

C.甲状腺可随吞咽动作向上移动

D.甲状腺肿大，质地不太硬

E.甲状腺肿大的程度多在胸锁乳突肌以内

用所给动词的适式填空。

1. We _______ (have) a meeting at that time.

2. My mother said she _______ (leave) for Shanghai in a few days.

3. When I got home, my mother _______ (cook) dinner.

4. By the end of last year, we _______ (learn) 2 000 English words.

5. He said that he ________ never _______ (see) such a beautiful picture before.

6. —Can I borrow the book, please?

    —Sorry, I _______ (not finish) reading it. I _______ (give) it to you next Monday.

7. Yesterday I told Mum that I _______ (go) on a trip to Yan'an.

    Mum said that she _______ (get) me a new backpack (背包).

8. We all knew that there _______ (be) a math exam in a few days,

    but nobody knew on which day it _______ (be).

    The teacher _______ (say) that we _______ (be) able to pass it if we _______ ( review) our lessons well.

9. The teacher _______ (finish) her class when we got there.

10. The hotel _______ (be) filled by the time they called.

水轮机的设计水头是指（）。

A、保证水轮机安全稳定运行的最低水头；

B、允许水轮机运行的最高工作水头；

C、水轮机发出额定出力的最低水头；

D、水轮机效率最高的水头。