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【单选题】
我国目前采用的高程系统是：A.
1956年黄海高程系统
B.
1985国家高程基准
C.
2000高程系统
D.
2008黄海高程系统
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【单选题】( )9. Zhao Lin _____ to Beijing by train often . He usually goes by plane.
A.
isn’t going
B.
doesn’t go
C.
not go
D.
don't go
【简答题】热电偶输出的________，是从零逐渐上升的，达到相应的温度后，则不再上升而呈现一个平台值。
【单选题】Zhao Lin _____ to Beijing by train often . He usually goes by plane.
A.
doesn’t go
B.
isn’t going
C.
not go
D.
don’t go
【单选题】Zhao Lin _____ to Beijing by train often. He usually goes by plane.
A.
don’t go
B.
not go
C.
doesn’t go
【简答题】广义的商品采购除了购买以外还包括 、 、交换三种途径。
【简答题】广义的商品采购除了购买以外还包括 、 、交换三种途径。
【单选题】Zhao Lin _____ to Beijing by train often . He usually goes by plane.
A.
isn’t going
B.
doesn’t go
C.
not go
D.
don’t go
【单选题】According to Zhao Lin, what’s the symptom of the disease?
A.
Some part of the roots have turned brown, and then purple.
B.
Some part of the roots have turned purple, and then brown.
C.
Some part of the leaves have turned brown, and then purple.
D.
Some part of the leaves have turned purple, and then brown.
【单选题】Zhao Lin _____ to Beijing by train often . He usually goes by plane.
A.
isn’t going
B.
doesn’t go
C.
don’t go
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