【单选题】The law requires that all motor cars regularly for safety and efficiency.
【单选题】The law requires all cars _______ for safety and efficiency. A. being tested regularly B. to be regularly tested C. be regularly tested D. regularly tested
【单选题】以下关于网络物理隔离技术的描述中,错误的是(42)。
B.
内网与外网(或内网与专网)的数据交换采用渡船策略
C.
每一次数据交换,都需要经历数据写入和数据读出两个过程
D.
内网和外网(或内网勺专网)在同一时刻最多只有一个物理隔离设备建立TCP/IP数据连接
【单选题】用什么制备单克隆抗体的骨髓瘤细胞与经绵羊红细胞免疫过的B淋巴细胞分别具有什么特点( )
A.
骨髓瘤细胞能无限增殖,B淋巴细胞能分泌抗体。
B.
骨髓瘤细胞能分泌抗体,B淋巴细胞能无限增殖。
C.
骨髓瘤细胞在HAT培养基中能无限增殖,B淋巴细胞则不能分泌抗体。
D.
骨髓瘤细胞在HAT培养基中不能增殖,B淋巴细胞则能无限增殖。
【单选题】The law requires all cars _______ for safety and efficiency.
A.
being tested regularly
B.
to be regularly tested
【简答题】The law requires equal treatment for all, ( ) race, religion or .
【单选题】The law requires all cars _______ for safety and efficiency.
A.
being tested regularly
B.
to be regularly tested
【单选题】.The law requires all cars _______ for safety and efficiency.
A.
being tested regularly
B.
to be regularly tested
【单选题】The law requires all cars _________ for safety.
B.
to be regularly tested
C.
being regularly tested
D.
having to be regularly tested