【单选题】What does the author say about the trade data of the past two years?
A.
It indicates that economic activities in the U.S. have increased.
B.
It reflects the fluctuations in the international market.
C.
It shows that U.S. economy is slipping further into recession.
D.
It signals decreasing domestic demand for goods and services.
【简答题】Maria: Have you got an ___(1)___ yet? Huan: Yes, I have. I will start in two ___(2)___ . Maria: ___(3)___ ! What company are you going to work for? Huan: The ___(4)___ is called Wave. Maria: I don ’ t...
【简答题】实验桌上有细线若干、两种规格的钩码(0.5N、2N)足够多、弹簧测力计一只(量程为5N、分度值为0.2N)、三种规格的注射器A、B、C(量程分别为20ml、10ml和5ml)、滑轮一只以及刻度尺一把.要求利用现有器材粗略测量大气压强.甲同学设计的方案如图甲所示,乙同学设计的方案如图乙所示. 请回答下列问题:(1) 两种设计方案,计算大气压强的公式是: _________。 (2) 实验中,应该在_...
【单选题】采用( )绘制的电气系统图,简单,明了,能清楚地注明导线型号、规格、配线方法,给工程量计算带来方便
【单选题】采用( )绘制的电气系统图,简单,明了,能清楚地注明导线型号、规格、配线方法,给工程量计算带来方便。
【单选题】Which of the following statements DOES NOT answer the question“What caused the life-sav-ing effect to occur in the early 1990s?”
A.
There were more cell phone users d uring that period.
B.
The number of eelI phone users reached about 100 million.
C.
More cell phones were used to call 911 when accidents occurred.
D.
Cell phones enabled people to have quick access to 911 services.