轮胎识别器传感器要求（）.
A.疲劳寿命长
B.可靠性好
C.防护等级高
D.自动识别悬浮轮胎
参考答案：A, B, C
Ken _____________ go swimming next Monday.[ ]
A. isn't
B. won't
C. was
D. wasn't
灌装前无法除菌过滤的冻干注射药液配制岗位的洁净级别是（）
A.B级
B.A级B背景下
C.D级
D.C级
