皮皮学，免费搜题
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搜题
【单选题】
Bây giờ 5 giờ 15 phút, _____đến giờ ăn cơm rồiA.
sắp
B.
sẽ
C.
bao giờ
D.
nào
E.
nhỉ
F.
đấy
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】组合夹具是由一套预先制造好的标准元件组合而成，这些元件具有各种不同形状、尺寸和规格，并且有较好的（）和较高的精度。
A.
硬度
B.
塑性
C.
刚性
D.
互换性、耐磨性
【单选题】We can learn from the last paragraph that .
A.
it is necessary to obtain as much information as possible
B.
people should make the best use of the information
C.
we should realize the importance of accumulating information
D.
it is of vital importance to acquire needed information efficiently
【简答题】From the refined oil we obtain important products, such as gasoline, ______ , detergents,______, ______ , and perfumes.
【单选题】Which system should be supplied to obtain the best efficiency and lowest emissions?
A.
Lean combustion principle
B.
Fuel oil system
C.
Electrical control system
D.
Electronic control system
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