灵活性服务是我国饭店服务的灵魂。
参考答案：错
He looked__________ when he saw a car coming to him. [ ]
A. scared
B. worried
C. strange
D. happy
全等节拍流水施工的特点是（）。
A.流水步距>流水节拍
B.流水步距<流水节拍
C.流水步距＝流水节拍
D.以上均不是
