客人预定暂时无法满足时,前台须使用《()》。
参考答案:预订等候单
I think he’s determined that he won’t give in—you may try your luck and see if you can persuade that old________fellow.
A.stubborn
B.uneducated
C.friendly
D.responsible
即使温度范围很小的馏分,它还是一个()。
A、单质
B、反应物
C、化合物
D、混合物