额定起重量包括可分吊具和（）。A、起重钢丝 B、可分属具 C、滑轮组 D、减速机 E

The nurse is interviewing a client who is currently under the influence of a controlled substance and shows signs of becoming agitated. What should the nurse do（）

A. Use confrontation.

B. Express disgust with the client’s behavior.

C. Be aware of hospital security.

D. Communicate a scolding attitude to intimidate the client.

超声波传播速度与频率之比等于（）。

A.波长

B.波幅

C.声阻抗

D.声压

句型转换。

1. He knows a little about Chinese. (对画线部分提问提问) 

   _____ _____ does he know about Chinese?

2. Jack's mother gives him ten dollars every day. (对画线部分提问提问)

    _____ _____ ______ _____ Jack's mother give him every day?

3. There are two cups of tea on the table. (对画线部分提问提问)

    _____ _____ ____ _____ tea on the table?

4. There is an apple in the picture. (对画线部分提问提问)

    _____ _____ in the picture?

5. There is an apple in the picture. (对画线部分提问提问)

    How _____ _____ _____ there in the picture?

炎症时白细胞定向移动的主要原因是（）

A.白细胞的阿米巴样运动

B.轴流消失

C.化学刺激物

D.血管壁的通透性增高

E.血管内压增高

铁道部规定的标准型缓冲器有（）。

A.一种

B.两种

C.三种

D.四种