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He is a fine old gentleman, with a face as red as a rose.
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【简答题】(7分)合成气的主要成分是一氧化碳和氢气,可用于合成二甲醚等清洁燃料.从天然气获得合成气过程中可能发生的反应有: ①CH 4 (g)+H 2 O(g)?CO(g)+3H 2 (g)△H 1 =+206.1kJ/mol ②CH 4 (g)+CO 2 (g)?2CO(g)+2H 2 (g)△H 2 =+247.3kJ/mol ③CO(g)+H 2 O(g)?CO 2 (g)+H 2 (g)△H 3 请...
【简答题】My destination is the River Walk, one of the most popular places in all of Texas. In the first half of 20th century, to control flooding, the city fathers began redirecting the San Antonio River. They...
【简答题】看图,选择合适的答案。 1. Is the River Thames long and wide? A. Yes, it is B. No, it isn't 2. Is Big Ben very young? A.Yes, it is B. No, it isn't 3. Is Tower Bridge very famous and beautiful? A. Yes, it is B. No...
【单选题】London is in the south of England and it is the River Thames. [     ]
A.
in
B.
on
C.
from
D.
to
【判断题】The longest river in the UK is the river Thames.
A.
正确
B.
错误
【简答题】句型转换。 1. The river is about 13 meters long .(对画线部分提问) _____ _____ is the river? 2. Do you have any idea? How big is Shanghai?(连成一句) Do you have any idea_____ _____ _____ _____? 3. Jim has been to many...
【简答题】同一化学成分的物质,在不同的外界条件(温度、压力、介质)下,可以结晶成两种或两种以上的不同构造的晶体,构成结晶形态和物理性质不同的矿物,这种现象称 。
【判断题】同一化学成分的物质,在不同的外界条件(温度、压力、介质)下,可以结晶成两种或两种以上的不同构造的晶体,构成结晶形态和物理性质不同的矿物,这种现象称类质同象。
A.
正确
B.
错误
【简答题】(12分)合成气的主要成分是一氧化碳和氢气,可用于合成二甲醚等清洁燃料。从天然气获得合成气过程中可能发生的反应有: ①CH 4 (g)+H 2 O(g) CO(g)+3H 2 (g)    ⊿H 1 ='+206.1' kJ/mol ②CH 4 (g)+CO 2 (g) 2CO(g)+2H 2 (g)   ⊿H 2 ='+247.3' kJ/mol ③CO(g)+H 2 O(g) CO 2 (g)...
【单选题】—Is the river long? —_______. [     ]
A.
Yes, it isn't.
B.
Yes, it is.
C.
Yes, he is.
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