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【判断题】
在现实经济中,由供求关系所决定的价格对经济一定是有利的A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following sentences is a compound sentence?A. The rich soil of river-made favored the growth of a thickly settled farming populating and this farming population had been united into a hig...
A.
...
B.
...
C.
...
D.
...
【单选题】桥式起重机接地体的制作时，可选用专用接地体或用50mm×50mm×5mm角钢，截取长度为( )，其一端加工成尖状。
A.
0.8m
B.
1.2m
C.
2.5m
D.
3m
【单选题】The bird began to dance______.
A.
as soon as they saw him
B.
as soon as he had finished cleaning himself
C.
as soon as he settled down
D.
some time after they first saw them
【单选题】1100. 制作桥式起重机接地体时,可选用专用接地体或用 500mm×50mm×5mm ( ),截取长度为 2.5m ,其一端加工成尖状。
A.
铁管
B.
钢管
C.
角铁
D.
角钢
【单选题】桥式起重机接地体的制作时,可选用专用接地体或用( )角钢截取长度为2.5m,其端加工成尖状。
A.
20mmx20mmx2mm
B.
30mm×30mm×3mm
C.
40mmx 40mmx4mm
D.
50mmx50mm×5mm
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