题干-1z-2014-22.隔热效果最好的砌块是()。
A. 粉煤灰砌块
B. 中型空心砌块
C. 混凝土小型空心砌块
D. 蒸压加气混凝土砌块
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烧结普通砖的尺寸是长×宽×厚240×115×53,每立方米砌体的理论用砖数量( )。
A. 529
B. 527
C. 512
D. 518
54.Which of the following uses a microchip in a tag to store information, and information is transmitted from the tag when the microchip is exposed to the correct frequency of radio waves?
A.CAVE
B.RFID
C.SaaS
D.F2b2C
55.With RFID technologies, each individual piece of merchandise will have a unique ____.
A.USP
B.EPC
C.trademark
D.UPC
49.Which of the following can be placed in the human body to store important information about a person, such as medical history, and can be GPS-enabled to offer a method of tracking?
A.Trackball
B.Implant chip
C.Multi-state CPU
D.Bluetooth