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问题 多项选择题

在下列哪些情况下需对电池组均衡充电（）

A、电池组中有两只以上电池电压低于2.18V。

B、电池浮充运行超过一个月。

C、电池储存时间超出三个月且静臵电压低于2.10V/单体。

D、电池组放电15分钟以上。

答案

参考答案：A, C, D

阅读理解
阅读理解。
     Different types of maps have different uses.
Tourist maps, for example, have signs (标志) to
show places of interest in an area. When tourists
read these maps, it is easy for them to find where
to go and what to see in a place and it is easy for
them to go and find their ways to these places.
    Road maps show large areas so that people can
plan long journeys. Different types of roads are
given different numbers. For example, if you want
to go to Wood Green, you just follow No. 621
Road and keep looking at the road signs.
    Distribution maps (分布图) use colors or signs to
show facts about an area. For example, where
different languages are spoken, how many people
live in an area, how cold and hot some places are,
or whether a place is short of water.
     Some maps, such as railway maps, use straight
lines to show everything. This is easy for people
to read. Trains are fast. People don't have to think
about small places they go past. They just need to
know the two ends of their trips.
1. Jim wants to visit some places of interest. Which map does he need most?
A. A road map.
B. A tourist map.
C. A distribution map.
D. A railway map.
2. How can you tell different roads on Road maps?
A. By finding the numbers.
B. By using different colors.
C. By using straight lines.
D. By looking at the road signs.
3. Which of the following can Distribution maps tell us?
A. How to get to Germany.
B. How to plan a long journey.
C. Which place is short of water.
D. Where a famous museum is.
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单项选择题

婴儿期不易患下列哪种疾病（）

A.婴儿腹泻

B.急性肾小球肾炎

C.支气管肺炎

D.缺铁性贫血

E.维生素D缺乏性佝偻病
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