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【判断题】
木纹主要用于表达书柜、衣柜、床头柜等木材质的表现。A.
正确
B.
错误
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举一反三
【单选题】Days of snowstorms have left the city under thick layers of ice and some 50,000 homes without power．
A.
to be trapped
B.
trapped
C.
having trapped
D.
being trapped
【单选题】甲醛是一种挥发性有机物，常温无色、有辛辣刺激性气味。主要隐藏在胶粘剂中，对眼睛、鼻子和呼吸道有刺激性，轻者流泪、喉咙痛痒，重者致癌，释放期可达（）年之久。
A.
3-15
B.
3-20
C.
1-2
D.
3-5
【单选题】甲醛是一种挥发性有机物，常温无色、有辛辣刺激性气味。主要隐藏在胶粘剂中，对眼睛、鼻子和呼吸道有刺激性，轻者流泪、喉咙痛痒，重者致癌，释放期可达（）年之久。
A.
3-5
B.
3-20
C.
1-2
D.
3-15
【单选题】In the past month, cruel snowstorms hit some European countries and America , great transportation problems in these countries.
A.
causing
B.
caused
C.
to cause
D.
having caused
【单选题】Last winter, many places of southern China were struck by heavy snowstorms, _____ more than 120 people were killed.
A.
from which
B.
in which
C.
at which
D.
for which
【简答题】说出盘式车轮制动器的工作过程。
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