游客欲购某一商品,但当时无货,请导游人员代为购买并托动,对这类要求导游人员应如何处理( )。
A.积极协助
B.一般应婉拒
C.及时请示领导
D.可先收钱后办事
参考答案:B
Mary rushed home_______ she heard the news, only______ that her husband was gone.
A.as soon as; finding
B.immediately; to find
C.the moment; find
D.when; found
原始标距应不小于()。
A.15mm
B.10mm
C.3d
D.5d