用吊具吊重大件物体及舱盖、吊笼时,严禁高速起升下降,所有机构运行速度必须控制在()档以内。
A、一
B、二
C、三
D、四
参考答案:B
如何选择燃气放散管的摆放位置?
A.避开楼宇
B.避开潜在点火源
C.两者皆是
以下各段叙述给出了 5 个计算机专业英文术语的英文解释。这些英文专业术语依顺序分别是(1) 、(2) 、(3) 、(4) 和(5) 。
(1)Messages that are sent electronically over a network.
(2)A series of instructions(commands) performed in a sequence specifying actions to accomplish a task.
(3)The character code built into most modern personal computers.
(4) The minimal unit of information, it can have the value 1 or 0.
(5)The brain of a computer, it contains the ALU, the clock, many registers, the bus interface and circuitry that makes these parts work together.
The character code built into most modern personal computers. ()
A.ASCII
B.internet
C.interface
D.Windows