【判断题】蓝田猿人比元谋猿人更要早,距现在大约300万年前。()
【单选题】我国陆地矿产资源的人均占有量不到世界人均量的一半。
A.
The amount per capita of the land mineral resources in China is less than half the figure per capita worldwide.
B.
The amount per capita of the mineral land resources in China is no less than half the figure per capita worldwide.
C.
The amount per capita of the mineral land resources in China is lower than half the figure per capita worldwide.
D.
The amount per capita of the land mineral resources in China is no more than half the figure per capita worldwide.
【判断题】日本和服的种类自上而下服饰颜色为:绯、深紫、浅紫、黑
【简答题】数控机床使用的交流主轴电动机采用三相感应电动机时可通过 的方式使主轴得到平滑的无级调速控制。
【简答题】对称三相负载星形接于三相电源上, 正确的说法是A. 一定要有中线 B. C. D.
【单选题】某公司预计2019年第三、第四季度销售甲产品分别为220件、350件,单价分别为2元、2.5元,各季度销售收现率为60%,其余部分下一季度收回,则该公司第四季度现金收入为( )元。
【单选题】According to the text, what are the reasons for the 'Renaissance' of gardening?
A.
Good weather, belt-tightening, economic downturn.
B.
Economic downturn, good weather, lower price.
C.
Government promotion, belt-tightening, credit crunching.
D.
New social trend, environmentalism, economic downturn.
【单选题】对称三相负载星形接于三相电源上,正确的说法是