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【简答题】
海关放行”是指海关在接受各类进出口货物的申报，经过审核报关单证、查验货物、依法征收税费，做出结束海关监管，允许货物自由处置(或自由流通)决定的行为。
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【简答题】听力原文：What kind of vacation do you enjoy most? Maybe you are thinking about spas, camping, a romantic night on the beach, or you prefer those extreme sports like bungee jumping. Whatever forms of vacat...
【单选题】The main task of the government is to reduce the level of inflation (通货膨胀). The word 'task'
A.
270. The main task of the government is to reduce the level of inflation (通货膨胀). The word 'task' means ______. A．exercise
B.
job
C.
habit
D.
Favourite
【单选题】//下面关于异步机制的代码,执行结果为 void myTask(){ print("this is my task"); } void main() { print("main start"); new Future((){ print("this is my task"); }); new Future.microtask((){ print("this is microtask"); ...
A.
main start this is microtask this is my task main stop
B.
main start main stop this is microtask this is my task
C.
main start this is my task this is microtask main stop
D.
main start main stop this is my task this is microtask
【单选题】// 异步链式调用和注册回调的处理,下面代码执行的结果为: void main() { print("main start"); // 链式调用,可以跟多个then,注册多个回调 new Future((){ print("async task"); }).then((res){ print("async task complete"); }).then((res){ print("async t...
A.
main start async task async task complete async task after main stop
B.
main start main stop async task complete async task after async task
C.
main start async task complete async task after async task main stop
D.
main start main stop async task async task complete async task after
【单选题】以下关于白盒测试和黑盒测试的理解，正确的是（）。
A.
白盒测试通过对程序内部结构的分析、检测来寻找问题
B.
白盒测试通过一些表征性的现象、事件、标志来判断内部的运行状态
C.
单元测试可应用白盒测试方法，集成测试则采用黑盒测试方法
D.
在软件生命周期各个阶段都需要用白盒测试方法
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