【单选题】建立虚拟局域网的交换技术有三种,它们是帧交换、信元交换和
【判断题】促性腺激素是调 节脊椎动物性 腺发育,促进性激素生成和分泌的糖蛋白激素。
【单选题】Which is the largest component of GDP?
【单选题】()的漂白粉澄清液可以用于消毒用具、家具等。
【判断题】通过平行登记,可以使总分类账户与其所属明细分类账户保持统驭关系,便于核对与检查,发现错误与遗漏。( )
【判断题】社会选择理论认为监管可以纠正市场失灵,增进社会福利。( )
【简答题】一系统需要高压动力源,用哪种动力元件合适____A、叶片泵 B、空气压缩机 C、轴向柱塞泵 D、齿轮泵
【单选题】Which of the following statements is FAULSE?_____________.
A.
The students easily become nearsighted because their books
B.
The white paper is harmful to students’ eyes.
C.
Students often use white paper in their books.
D.
Yellow paper is much better to the eyes of students who may do reading or writing for hours .