特约委托收费的客户,当银行无法划拨电费时,收费员领回票据后应在()中做()。
参考答案:收费系统;退票登记
For nearly 50 years, Spock has been a ______ author writing 13 books including an autobiography and numerous magazine articles.
A.prevalent
B.precautious
C.prospective
D.prolific
进入观光梯轿顶维保时,如果需要佩带安全带,该如何做?