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【简答题】
人造石材一般可为几类?每一类人造石材的主要特性有哪些?
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参考答案:
举一反三
【单选题】What happened to Tom?
A.
He is ill.
B.
He hurt his leg.
C.
He fell off a truck.
【单选题】加水烙是在干烙的基础上加水,但加水时要先加在金属锅温度 ( ) 的地方。
A.
最高
B.
最低
C.
适中
D.
无特殊要求
【判断题】随机误差具有单向性
A.
正确
B.
错误
【单选题】What happened to Tom?
A.
He was lost.
B.
He w as picked up by a policeman.
C.
His brother was found.
【单选题】启动机的解体检测中,( )是电枢不正常现象。
A.
换向器片和电枢轴之间绝缘
B.
换向器片和电枢铁心之间绝缘
C.
换向器之间绝缘
D.
以上都是
【单选题】— What happened to Tom yesterday? — Well, he was walking in the street when a stone flew up and hit _______.
A.
him in the head
B.
him in his head
C.
him on the head
D.
the head
【单选题】— What happened to Tom? — He was crossing the street ____ a motorbike hit him from behind. [     ]
A.
while
B.
when
C.
until
D.
because
【单选题】What happened to Tom?
A.
He got injured.
B.
His bicycle is stolen.
C.
His bicycle fell.
【单选题】今年流行的病毒名称为( )
A.
普通流感病毒
B.
SARS
C.
H1N1型流感病毒
D.
新型冠状病毒(2019-nCoV)
【判断题】随机误差具有单向性
A.
正确
B.
错误
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