在Windows中,不用放入“回收站”而直接删除文件的操作是()。
A. 按Shift键+Del键,或按住Shift键后用鼠标拖到“回收站”
B. 用鼠标直接拖到“回收站”
C. 直接按Del键
D. 从“文件”菜单选“删除”
查看答案
护士行鞠躬礼时,身体向前倾约()
A. 10°~15°
B. 15°~30°
C. 15°~45°
D. 40°~50°
Withagivenloadonthecargohook,tensioninasinglespantoppinglift().
A. increasesastheboom'sangletothehorizontalincreases
B. isatamaximumwhentheboomisata45°angletothehorizontal
C. increasesastheboom'sangletothehorizontaldecreases
D. decreasesastheboom'sangletothehorizontaldecreases
启动Windows时,可以显示Windows的开始菜单的按键是()。
A. F6
B. F4
C. F8
D. F2
"gaugepressure"means().
A. "vacuum"
B. "theexcessofpressureaboveatmosphere"
C. "figureonagauge"
D. Anyoftheabove