卧式高压加热器就地水位计测得水位低于高压加热器实际水位。（）

阅读理解。

                                                     Find Which Direction Is South

     Do you have a good sense of direction? If not, please take with you a compass. But if you forget to take

a compass, you can still find your way.

     It's never a good idea to imagine that the family member who was entrusted (委托) with the job of map-

reading actually knows where the family is. You can tell by the slightly confused load on their faces that

nothing on the ground seems to match the map. Never mind. The shu is shining and it's still morning. If you

don't know the exact time, you can still find out where south is, but you'll need to be patient. 

     ①Find a straight sick and put it in the ground in a place where you can mark its shadow.

     ②Try to position the stick as vertically (垂直) as you can. You can check this by making a simple plumb

line (铅锤线) with a piece of string and weight. You haven't got any string? OK, use a thread from your

clothes with a button tied at the end to act as a weight.

     ③Mark the end of the shadow cast by the stick.

     ④Wait approximately half an hour and mark the end of the shadow again.

     ⑤Keep doing this until you have made several marks.

     ⑥The mark nearest the stick will represent the shortest shadow, which is cast at midday, when the sun

is highest in the sky and pointing to the exact south.

     ⑦Pick a point in the distance along the line between the shortest shadow and the stick.

     ⑧That point is south of where you are.

     ⑨Now you can turn the map, like you did before, and find which way you should be travelling.

1. To find the direction, we ought to be patient probably because _____.

A. it is not easy to find a proper stick

B. it is not easy to position the stick

C. it takes hours to make the marks

D. it takes about half an hour to make the marks

2. The passage would probably be most helpful to _____.

A. those who draw maps

B. those who get lost

C. those who make compasses

D. those who do experiments

3. Which of the following pictures best shows the way of finding the direction of south?

A.  B.

C.  D.

4. The author presents this passage by _____.

A. telling an interesting story

B. describing an activity in a lively way

C. testing an idea by reasoning

D. introducing a practical method

A．公园
B．动物园
C．回家

什么是利益相关者？企业直接利益相关者？企业间接利益相关者？

丁苯橡胶的与天然橡胶混炼时混炼机的设定温度相同。

TPS系统中，GUS系统操作站通过（）主板和LCN网络连接。

A.EPLCG

B.K4LCN

C.LCNP

D.PLNM