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【单选题】
//关于async和await 的使用,下面代码执行的结果为: import 'dart:io'; void main() { print("main begin"); checkVersion(); print("main end"); } Future checkVersion() async { var version = await lookUpVersion(); return version; } void lookUpVersion() { sleep(Duration(seconds:2)); print("version 1.000"); }A.
main begin version 1.000 main end
B.
main begin main end version 1.000
C.
version 1.000 main begin main end
D.
出错
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举一反三
【单选题】No one could say how the magician was able to pull a rabbit out of his hat until he later ______________ his tricks.
A.
threw light on
B.
take light on
C.
take out
D.
took out
【单选题】I loved the cabin in the village because it ’s full of() charm.
A.
urban
B.
city
C.
rustic
D.
common
【简答题】(一)目的:掌握各种存货计价方法的运用。 (二)资料:某企业甲商品年初结存数量3000件,结存金额8 700元。1月份进货情况如下表。 (三)要求:采用下列方法分别计算甲商品本年1月份的销售成本以及1月末的结存金额。 (1)加权平均法 (2)先进先出法 (3)移动加权平均法
【简答题】完形填空。 Hi, my name is Jeff. Last summer I had a l vacation. I went across We drove six to eight the USA 2 my parents by car. 3 a day. In big cities, we stayed in big hotels. The food 4 usually delici...
【简答题】完形填空 Hi, my name is Peter. Last summer I had a 1 vacation. I went across the USA 2 my parents by car. We drove six to eight 3 a day. In big cities, we stayed in big hotels. The food 4 usually delicio...
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