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【判断题】
提高蒸发器的蒸发能力，其主要途经是提高传热系数。A.
正确
B.
错误
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【单选题】楼梯踏步的计算公式常为: ( ) ,其中 h 为踏步高, b 为踏步宽。
A.
h+b=600
B.
2h+b=660 mm
C.
h+b=450 mm
D.
2h+b=450 mm
【单选题】The writer seems to hope that______.
A.
most of the lottery money will be used for cancer research
B.
most of the lottery money will go to charity
C.
people will give more money to charity
D.
people will spend more money on the National Lottery
【多选题】楼梯踏步的计算公式常为（），其中h为踏步高，b为踏步宽。
A.
h+b=600mm
B.
2h+b=600mm
C.
h+b=450mm
D.
2h+b=450mm
E.
h+2b=600mm
【多选题】楼梯踏步的计算公式常为 ( ) ,其中 h 为踏步高, b 为踏步宽。
A.
2h+b=600mm
B.
2h+b=450mm
C.
h+b=450mm
D.
h+b=500mm
【简答题】As we know, most of the material things in our daily life have to be bought with money. But money is not all powerful. Money can't buy many things such as time and true love. There are 24 hours in a d...
【单选题】(Track lighting) is one of the most popular types, (if not) the most popular type, (of) lighting (on market) today.
A.
Track lighting
B.
if not
C.
of
D.
on market
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