当地物、地貌变化范围不大时,采用一般补测,当其变化范围超过()以上时,则需要进行重测或重摄。
A.1/3
B.1/2
C.2/3
D.3/4
参考答案:A
Jade is the highest award in Chinese culture and medals are the most important prize in Olympics, so medals with jade is the perfect _________ to present the Olympics in Beijing.
A.connection
B.cooperation
C.combination
D.composition
房间的容积为20m3,在温度为7℃、大气压强为9.8×104 Pa时,室内空气质量是25kg。当温度升高到27℃,大气压强变为1.0×105 Pa时,室内空气的质量是多少?