乌桕油的熔点为( )
A.10~20℃B.34~38℃C.31~34℃D.30~34℃E.38~42℃
参考答案:E
解析:[知识点] 油脂性基质
She felt embarrassed at first when she was removed to a new school. Later on she felt ______, getting along well with her classmates.
A.out of place
B.at home
C.in trouble
D.under pressure
在下列多路复用技术中,适合于光纤通信的是 (19) ,在数据通信中,利用电话交换网与调制解调器进行数据传输的方法属于 (20) 。
A.频带传输
B.宽带传输
C.基带传输
D.IP传输