"V"形天窗作业的发票人、工作领导人（监护人）、坐台要令人的安全等级不低于四级。
参考答案：对
— What about ________?
— Great! But it is half past five. It`s time _______. [ ]
A. playing soccer; to go home
B. to play soccer; going home
C. playing soccer; going home
胆囊重度增大最可能的原因是（）
A.梗阻
B.变异
C.肝炎
D.肝硬化
E.脂肪肝
