下列各项中,不属于植物芳香油具有的功能的是[ ]
A.提高神经系统的兴奋性
B.提高免疫力
C.直接调节新陈代谢
D.保健、美容等
答案:C
读歌谣,记单词。写出1—10的英语单词。
One two, one two. How do you do?
Three four, three four. Close the door.
Five six, five six. Draw five chicks.
Seven eight, seven eight. Glad to meet you, Kate.
Nine ten, nine ten. Show me a pen.
当()光缆在建筑物内采用暗管敷设时,管道的截面利用率应为25%~30%。
A.2芯
B.4芯
C.8芯
D.24芯