脑内转移癌的特点是（） A.多发性病灶 B.可形成癌性脑膜炎 C.高颅压 D.癌中心

引起心脏容量负荷增加的疾病是（）

A.肺纤维化 

B.肺栓塞 

C.主动脉瓣关闭不全 

D.动脉粥样硬化 

E.高血压

Shower Radio --- Warranty (保单) and Directions

Introduction

Congratulations! You are now the owner of a So Fine Shower Radio! It is sure to provide entertainment for many hours. In addition, the radio features a timer for those days when you are in a hurry.

Before using the radio, please read all directions, fill out and mail in the warranty card, and put warranty information in a safe place. Although we do not expect problems with the radio, you may need to refer to the warranty information at a later time.

Warranty

This radio is warranted for a one-year period that begins on the date of purchase. If it fails to work because of a problem of materials, please return it to the following address: So Fine Radio Corp, 1279 Delta Way, Monga.

We will not pay shipping costs for returning the radio to us. We will either repair or replace the radio. Please allow at least four weeks for looking at the problem and repairing the radio. If you have not heard from us within six weeks, call our customer service department at 1-800-123.

Radios that are returned to us for problems other than a problem of materials will be subject to service fee as well as the cost of the repairs. Customers will be informed of the charge by postcard. Radios will not be returned to customers until these fees are paid.

Directions

Please read all directions before using it.

Please note that this radio is designed and built to operate well in a damp environment. The self-contained batteries and circuits (线路) are contained in the enclosed space that will bear heat and humidity.

To Operate the Radio

1. Put two AA batteries in the enclosed space at the back of the radio. Be certain to follow the diagram, or the batteries will not provide electricity. The radio should NOT be adapted in order to be fixed into the wall; this will damage the waterproofing (防水).

2. Turn the POWER dial in a clockwise direction until it clicks. Continue turning the dial until the desired volume is achieved.

3. To find the desired station, press the station selector button. The tuner (调谐器) will automatically go to the next highest signal. The station’s call number will be visible in the digital screen. When the station with the highest frequency has been reached, the selector will start again at the lowest frequency.

4. To switch between AM and FM stations, move the sliding AM/FM switch.

To Operate the Timer

1. Press the Timer Set button. Each time the button is pressed, five minutes will be put on the timer. The amount of time on the timer will be visible for five seconds on the digital screen.

2. When the time on the timer doesn’t work, a beep will sound for ten seconds. The timer may be reset again one minute.

Troubleshooting

Before returning the radio for service, please check the following items:

Problem: Radio cannot be heard.

1. Check batteries to be certain that they still have power and are put in correctly.

2. Check Power/Volume Control.

Problem: Timer does not work.

1. Check batteries to be certain that they still have power and are put in correctly.

2. Follow directions above for setting timer.

3. Turn the power control on. The timer will not work when the radio is not on.

4. Adjust the volume control which regulates the volume of the beep as well as the radio volume.

小题1:The digital screen will show both ______.

A．the volume level and the AM/FM indicator

B．the AM/FM indicator and the radio station

C．the time remaining on the timer and the date

D．the call number and time on the timer小题2:Which of the following is covered within this text?

A．How to operate the radio and the timer.

B．What other owners say about the radio.

C．Who will benefit from using the radio.

D．Where to purchase the radio.小题3:What question might a reader still have about this product?

A．How can I know the service fee?

B．Where should I send a nonworking radio?

C．How is the radio placed in the shower?

D．What kind of batteries does the radio use?小题4:According to the text, what should you do before returning the radio for service?

A．Contact the store where you purchased it.

B．Check whether certain problems exist.

C．Call the producer for a repair number.

D．Consult the telephone book for local repair service.

阈电位是指

A．细胞发生反应的最适刺激
B．Na⁺ 通道开放的膜电位值
C．正反馈Na⁺ 内流的临界膜电位
D．正反馈K⁺ 外流的临界膜电位
E．Na⁺ 通道开始关闭的膜电位值

结核病是通过（）进行传播的。

A.水源

B.空气

C.性接触

D.蚊虫

电动升降平台使用应遵守哪些安全规定？