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【简答题】
We shall use as few plastic bags as we can.
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【简答题】阅读理解。 Hanukkah Hanukkah (光明节) is a Jewish festival. It is celebrated on the 25th day of the Jewish month of Kislev (犹太教历), which is usually sometime in December. It is often called the festival of lig...
【单选题】Five pilots landed J-15 fighter jets on the Liaoning， Cbina‘s first aircraft carrier the critics， who once described it as a shark without teeth.
A.
about
B.
above
C.
against
D.
across
【单选题】利用某分子筛作催化剂，【图片】可脱除废气中的【图片】和【图片】，生成两种无毒物质，其反应历程如下图所示，下列说法正确的是【图片】
A.
X是
B.
汽车尾气中含有的氮氧化合物是由于汽油燃烧产生的
C.
中含有非极性共价键
D.
上述历程的总反应为：
【单选题】下列关于扣件安装的注意事项说法正确的有( )。
A.
扣件规格必须与钢管规格相同。
B.
连接纵向(或横向)水平杆与立杆的直角扣件，其开口要朝下。
C.
各杆件端头伸出扣件盖板边缘长度不应小于100mm。
D.
扣件螺栓拧紧力矩应小于30N·m。
【简答题】The moon is sma l ler than the earth. It is three hundred and eighty thousand kilometers away from us. In 1969, two Americans got to the moon by spaceship. They found no living things there. And there...
【判断题】The use of the M and N circles enables us to find the entire closed-loop frequency response from the open-loop frequency response G(jω) without calculating the magnitude and phase of the closed-loop t...
A.
正确
B.
错误
【多选题】扣件安装必须符合哪些规定（ ）。
A.
扣件规格必须与钢管外径相符
B.
螺栓拧紧扭矩不应小于 45N.m ，且不应大于 65N.m
C.
在主节点处固定横向水平杆、纵向水平杆、剪刀撑、横向斜撑等用的直角扣件、旋转扣件的中心点的相互距离不应大于 150mm
D.
对接扣件开口应朝上或朝内
E.
各杆件端头伸出扣件盖板边缘长度不应小于 100mm
【单选题】The movie ________ on J. K.Rowling's Harry Porter and the Goblet of Fire was put on in the theaters on Nov.18,2005.
A.
basing
B.
based
C.
being based
D.
to be based
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