劳动力需求是对物质产品和服务需求的一种什么需求()
A.间断
B.主观
C.派生
D.短期
参考答案:C
In other cultures, looking thin for a husband-to-be is not a woman desires at all, but looking a
little overweight is considered more attractive.
A. which
B. whether
C. that
D. what
像管中()的出现和使用,成为第三代像管出现的标志性部件。
A.负电子亲和势阴极;
B.电子光学系统;
C.微通道板MCP;
D.光纤面板;