护肩路基的高度一般不超过( )m。
A.3 B.2C.1 D.0.8
参考答案:B
The young man had some bad fish yesterday. _____, he felt sick this morning.[ ]
A. Because
B. Because of
C. As a result
D. As a result of
多个进程共享一个文件,其中只读文件的称为读者,其中只写文件的称为写者。读者可以同时读,但是写者只能独立地写。请问: