【简答题】已知某砂样(500g干砂),筛分结果如下表,求分计筛余、累计筛余、细度模数,判定其为何种砂。 筛孔尺寸/mm 4.75 2.36 1.18 0.60 0.30 0.15 0.15以下 筛余量/g 25 70 70 90 120 100 25 分计筛余/% 累计筛余/%
【多选题】下列企业促销展业赠送礼品的行为中,不征收个人所得税的有( )。
B.
乙企业对消费积分达到1万分以上的客户每人赠送保温壶一个
C.
丙企业在新产品发布会上,随随机向与会客户赠送面包机
D.
丁企业在开业庆典上,随机向参加庆典的客户赠送豆浆机
【判断题】世界银行的多边投资保险机构可以为跨国公司规避国家风险提供保障。
【简答题】某砂样(干砂 500g )筛分结果如下表,细度模数为 。 筛孔尺寸(mm) 4.75 2.36 1.18 0.60 0.30 0.15 筛底 筛余量(g) 25 80 70 95 105 100 25 分计筛余率(%) 5 16 14 19 21 20 5 累计筛余率(%) 5 21 35 54 75 95 100
【简答题】For his health, he undoubtedly needed a _______ in his heart assoon as possible. A) surgeon B) surgery C) suce D) supplement
【单选题】MCS-51寻址方式中,立即寻址的寻址空间是 。
D.
片内 RAM的20H~2FH安节中的所有位和部分专用寄存器SFR的位
【单选题】_____ with his wife twice, James decided it was time that they had a heart-to-heart talk. [ ]
【单选题】Tom put his heart into the wildlife research, and finally, his efforts ________ him great success and fame. [ ]
【单选题】常用于评价色谱分离条件选择是否合适的参数是( )