搜题请搜索小程序“爱下问搜题”
问题 单项选择题

2007年安徽省规模以上工业增加值
指 标 绝对数(亿元) 比上年增长(%)
规模以上工业 2364.8 24.5
其中：轻工业 682.7 24.7
重工业 1682.1 24.5
其中；国有企业 284.0 13.7
集体企业 36.3 16.4
股份合作企业 17.2 26.3
股份制企业 1605.5 25.9
外商及港澳台商投资企业 353.1 26.3
其中：国有及国有控股企业 1114.5 15.3
大中型工业企业 1567.1 17.0

轻工业增加值为规模以上工业增加值的( )。

A．22.4%

B．24.6%

C．26.1%

D．28.9%

答案

参考答案：D

解析： 682.7÷2364.8≈28.9%，故选D。

单项选择题

Mud from a lake on an uninhabited wooded island in northern Lake Superior contains toxic chemicals, including toxaphene, a banned pesticide for cotton that previously was manufactured and used, not in nearby region of Canada or the northern United States, but in the southern United States. No dumping has occurred on the island. The island lake is sufficiently elevated that water from Lake Superior does not reach it.
The statements above, if true, most ply support which of the following hypotheses

A．The waters of the island lake are more severely polluted than those of Lake Superior.

B．The toxaphene was carried to the island in the atmosphere by winds.

C．Banning chemicals such as toxaphene does not aid the natural environment.

D．Toxaphene has adverse effects on human beings but not on other organisms.

E．(E) Concentrations of toxaphene in the soil of cotton-growing regions are not sufficient to be measurable.
查看答案
单项选择题

2245新装的舵机应在充油后以（）对转舵液压缸和主油路系统进行液压密封性试验。

A.1.25倍工作压力

B.1.25倍设计压力

C.1.5倍设计压力

D.1.5倍工作压力
查看答案