禁止采煤机带负荷启动和频繁开动。()
参考答案:对
Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important role.
A.who
B.where
C.which
D.of which
用户用计算机高级语言编写的程序,通常称为
A.汇编程序
B.目标程序
C.源程序
D.二进制代码程序