调整气流干燥设备的进料振动式输送机频率和（），可使物料输送均匀，无结团和成堆现象。
A.水平
B.振幅
C.安装位置
D.旁板高度
参考答案：B
剖析《文心雕龙·原道》篇关于“文”与“道”的论述。
The fact that people are afraid to go out at night is often a result of perceived (感知) danger ________
actual danger. [ ]
A. other than
B. more than
C. rather than
D. better than
