【单选题】It is not boring inside Bennett's new building because ______.
A.
there is a telewindow on the roof projecting the outside view.
B.
there are lenses and mirrors on all floors.
C.
there is an array of lenses reflecting sunlight.
【多选题】下列陈述错误的是( )。
A.
向工业废水中投加某些化学物质,使其与水中溶解杂质反应生产难溶盐沉淀,使废水中溶解杂质浓度下降,此为化学沉淀法。
B.
在一定温度下,含有难溶盐的饱和溶液中,各种离子浓度的乘积叫做溶度积,他是一个变量。
C.
化学沉淀法主要用于处理含有机物浓度较高的工业废水。
D.
对于含磷废水的化学沉淀处理,主要采用投加含低价金属离子盐来实现。
【单选题】听力原文:(A) There is a calendar on the shelf. (B) There are some posters on the wall. (C) There are notices on the bulletin board. (D) There is a closet next to the board.
【单选题】不属于消费者市场其独特的市场特征的是( )。
【多选题】下列各项关于中国人群脑卒中流行病学的陈述错误的是()
D.
脑卒中死亡在总死亡中所占比例明显低于冠心病死亡
【单选题】There is pressure on the British Government to ______ the number of immigrants permitted to settle in the U.K.
【简答题】听力原文:(A) There is some furniture by the doorway. (B) She is placing some documents on the table. (C) Some tables are not being occupied, (D) Customers are waiting in line.
【单选题】— The radio is too noisy and there is nothing interesting on it. Why don't you ? — All right. I'll do that. [ ]
【单选题】下列各项关于中国人群脑卒中流行病学的陈述错误的是
【单选题】取阿司匹林约 0.1g,加水 10mL,煮沸,放冷,加三氯化铁试液 1 滴,即显( )