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【单选题】
下列能正确表示水解的离子方程式是A.
CH 3 COOH + H 2 O CH 3 COO - + H 3 O +
B.
NH 4 + + H 2 O NH 3 ·H 2 O + H +
C.
CO 3 2- + 2H 2 O H 2 CO 3 + 2OH -
D.
Br - + H 2 O HBr + OH -
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【简答题】Epic s Launcer的作用是什么?
【单选题】Which of the following conclusions can be drawn from the second paragraph?
A.
Customers should always be well serviced.
B.
Without loyal customers an organization might go bankrupt.
C.
Companies can employ customers to advertise their products.
D.
It is difficult for large organizations to provide their customers with good service.
【多选题】根据《节能与新能源汽车产业发展规划( 2012―2020 年)》所指新 能源汽车主要有( )
A.
纯电动汽车
B.
插电式混合动力汽车
C.
天然气汽车
D.
燃料电池汽车
【单选题】2012 年7月,国务院发布的《节能与新能源汽车产业发展规划(2012-2020年)》对新能源汽车的表述是:新能源汽车是指_______。
A.
采用新型动力系统，完全或主要依靠新型能源驱动的汽车
B.
代用燃料汽车
C.
低公害汽车
D.
电动汽车
【单选题】Which of the following conclusions about the Grand Canyon can be drawn from the passage?
A.
Its contours are constantly changing.
B.
It contains approximately 14 million tons of rock.
C.
Its eruptions have increased in recent years.
D.
It is being eroded by toxic waste and pollutants.
【单选题】Which of the following conclusions can be drawn from the second paragraph? ______
A.
Customers should always be well serviced
B.
Without loyal customers an organization might go bankrupt
C.
Companies can employ custofners to advertise their products
D.
It is difficult for large organizations to provide their customers with good service
【单选题】Incorrect interpretation of lab conclusions leads some people to believe that HIV can be transmitted in the environment.
A.
Y
B.
N
C.
NG
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