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【单选题】
Why a tour guide should introduce the tour itinerary? Which one is the wrong answer?
A.
Because it is the necessity of service tenet of a tour guide.
B.
Because the tourists always want to know the schedule and itinerary urgently.
C.
Because the tourists wants the tour guide offer some recommends for them.
D.
Because the tourists wants to travel by themselves.
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【单选题】You will fail the test ______ you work hard. So work hard from now on! [     ]
A.
if
B.
as soon as
C.
unless
D.
even though
【单选题】805 节流阀利用的是( )原理来制冷的。
A.
物质守恒
B.
能量守恒
C.
热量平衡
D.
焦耳-汤姆逊效应
【判断题】只有现金才能够称为货币。
A.
正确
B.
错误
【单选题】Do you think the problem is ______? If you think hard, you'll find it ______ to work out. [     ]
A.
hard; easy
B.
easy; hard
C.
hardly; easily
D.
hard; easily
【单选题】下列哪种疾病抗核抗体检测阳性率最高?
A.
类风湿关节炎
B.
系统性红斑狼疮
C.
系统性硬化症
D.
慢性活动性肝炎
E.
强直性脊柱炎
【单选题】衍生类证券产品派生于什么?
A.
公司类型
B.
股票份额
C.
基础证券
D.
证券类型
【单选题】You ____________ everyday. [     ]
A.
work hard
B.
hard work
【简答题】下面的程序是利用 80C51 单片机的定时器 T0 中断,实现 I/O 口 P1.3 端口状态每 10ms 状态取反一次。系统晶振频率为 12MHz 。请对指定语句进行必要注释。 ORG 0000H AJMP MAIN ORG 000BH ; (2 分 ) AJMP DSQ0 MAIN: SETB EA SETB ET0 MOV TMOD, #01H ; (1 分 ) MOV TH0 , #0D8...
【简答题】A good way to pass an exam is to work hard every day in a year. You may fail in an exam if you are lazy for most of the year and then work hard only a few days before the exam. If you want to be good ...
【简答题】利用 80C51 单片机的定时器 T0 中断,实现 I/O 口 P1.3 端口状态每 10ms 状态取反一次。系统晶振频率为 12MHz 。 ( 请使用定时器中断完成定时 ) ORG 0000H AJMP MAIN (2 分 ) ;定时器 T0 中断入口定位 AJMP DSQ0 MAIN: SETB EA SETB ET0 MOV TMOD, #01H MOV TH0 , #0D8H MOV TL...
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