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【判断题】
DK-1型制动机电空位操作，空气制动阀“运转”位、电空制动控制器“重联”位时，中继阀呈锁闭状态，遮断阀切断了列车管风源。A.
正确
B.
错误
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【简答题】The movement of ocean water serves to regulate the climate on land．
【简答题】用 must, mustn’t, may, may not , can 或 can’t 填空。 This is Mrs Lee’s first trip to Canada. She (1) _____________ only speak a little French and a little English . Today, she will go the Canadian Embas...
【单选题】Hydrogeology is the study of water and its properties, including its ______and movement in and through land areas.
A.
flow
B.
absorption
C.
distribution
D.
evaporation
【简答题】读短文，判断正(T)误(F)。 Becky is a little girl. She is only five. She does not go to school and of course, she can't read or write. But her sister Mary is a schoolgirl. She is ten. One day, Mary sees her litt...
【单选题】The resistance to the movement of the globule in oily water mixture depends on its size and the _____ of the fluid.
A.
pressure
B.
velocity
C.
gravity
D.
viscosity
【单选题】Nearly six million people go to see the Mona Lisa every year, attracted by the o f her smile. When you're not looking at her, she seems to be smiling when you look a t her , she stops.
A.
outline
B.
shape
C.
mystery
D.
pleasure
【简答题】不超过20℃（ ）。
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