下载APP
【单选题】
Please remain ______ and report any unattended luggage to the authorities.
A.
alarming
B.
alert
C.
warning
D.
Detective
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】已知①A+B→C+D，【图片】＝－40.0kJ·mol-1，②2C+2D→E，【图片】＝60.0 kJ·mol-1，则反应③E→2A+2B的【图片】等于...................................................（ ）
A.
140 kJ · mol-1
B.
－ 140 kJ · mol-1
C.
－ 20 kJ · mol-1
D.
20 kJ·mol-1
【单选题】居住街坊中心绿地的设置应满足有不少于的绿地面积在标准的建筑日照阴影线范围之外的要求，并便于设置儿童游戏设施和适于成人游憩活动。
A.
1/2
B.
1/3
C.
2/3
D.
1/4
【单选题】Some mathematical models or design tools have been proposed for this purpose.
A.
Explaining the significance or necessity of the research
B.
Reviewing the existing literature relevant to the present study
C.
Identifying a gap in the existing literature
D.
Announcing the purpose/focus of the study
E.
Outlining the paper structure