【单选题】为防止枸橼酸钠中毒反应,每输入1000ml库存血,可静脉缓慢注射( )
【判断题】钢板弹簧各片在自由状态下做成不同曲率半径的目的是减少主片的工作应力。
【单选题】This heater consumes _______________ that one does.
A.
electric power twice as great as
B.
greater twice electric power
C.
twice as great electric power as
D.
twice greater electric power
【判断题】温带湖泊水温的时空分布特点是夏季逆温,冬季正温,春秋同温。
【判断题】钢板弹簧各片在自由状态下做成不同曲率半径的目的是减少主片的工作应力和尽可能提高主片的寿命。
【单选题】(10分)This heater consumes _______________ that one does.
A.
greater twice electric power
B.
electric power twice as great as
C.
twice as great electric power as
D.
twice greater electric power
【单选题】逆转录PCR以细胞内( )为材料进行核酸扩增的技术
【判断题】王二是某国有企业的财务经理,他将其女儿安排在本部门担任存货会计,他的这一行为违背了会计人员回避制度。( )
【单选题】当需表达机件内部部分结构,需选择( )来表达。