Recently the hospital has imported ________ they call a scanner, ________ will be used to examine patients' internal organs. A.what; that B.that; which C.what; which D.whic
《元史》载某一机构的职能:“掌国庶务,统郡县,镇边鄙,与都省为表里。” 该机构应是: A.宣政院 B.吏
(4)向一定浓度的BaCl2溶液中通入SO2气体,未见沉淀生成,若在通入SO2气体的同时加入由甲和乙中的一种或几种元素组成的某纯净物,即可生成白色沉
农业生产中,下列哪项措施不属于解除顶端优势( ) A.茶农每年秋季修剪茶树,增加下年采摘量 B.移栽花卉时除去部分叶片 C.移栽农作物
发现电流的磁效应的科学家是:( )A.库仑 B.奥斯特 C.法拉第 D.安培
There is only one ticket for both of us. ______ you ______ I can go into the door. A.Either, or B.Neither, nor C.Both, and D.Not only, but also
关于α粒子散射实验的结果,下列说法正确的是 A.极少数α粒子偏转角超过90°B.有的α粒子被弹回,偏转角几乎达到180°C.少数α粒子穿过金箔后仍沿