Printing ______ greatly at the beginning of the 11th century.A: will be developedB: has
Printing ______ greatly at the beginning of the 11th century.
A: will be developed
B: has been developed
C: is developed
D: was developed
Printing ______ greatly at the beginning of the 11th century.
A: will be developed
B: has been developed
C: is developed
D: was developed
第1题
A.钙RNI为600mg/d
B.维生素A的RNI为310μgREA/d
C.维生素D的RNI为20μgREA/d
D.铁RNI为9g/d
第2题
The whole world looks upon the rapid(economy). ______ development of our country as a great wonder.
第3题
A.Personal observation
B.Standardized tests
C.Statistical reports
D.Written reports
E.Word-of-mouth reports
第4题
A.After all
B.As a result
C.As a whole
D.As usual
第5题
考虑周期离散时间指数时间信号
证明该信号的基波周期是
其中gcd(m, N) 是m和N的最大公约数(greatest common divisor) , 也就是将m和N都能约成整数的最大整数,例如
注意:若m,N无公因子,则N0=N0。
第6题
A.Speciality printing
B.Screen printing
C.Flexographic printing
D.Gravure printing
第7题
A.Lithographic printing
B.Gravure printing
C.Speciality printing
D.Flexographic printing
第8题
3D printing is just at the beginning stage. It is not ____.
A、mature
B、ripe
C、grown
第9题
A) Release
B) Publication
C) Printing
D) Exposure
第10题
When was the printing press introduced into Britain?
A.1500
B.1491
C.1422
D.1476
第11题
A.papermaking
B.printing
C.gunpowder
D.compass
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