____________ congestion control to prevent the congestion. A: close loop B: open loop C: end loop

下列可以作为标号的是（）。 A: loop# B: Loop C: #loop D: ;loop

A circular loop of wire is held in a uniform magnetic field, with the plane of the loop perpendicular to the field lines. Which of the following will not cause a current to be induced in the loop? A: crushing the loop B: rotating the loop about an axis perpendicular to the field lines C: keeping the orientation of the loop fixed and moving it along the field lines D: pulling the loop out of the field

Arduino IDE的默认程序段为（ ） A: Setup()和Loop() B: setup()和Loop() C: Setup()和loop() D: setup()和loop()

_____________ congestion control to remove the congestion in a network once it occurred. A: open loop B: end loop C: closed loop

阅读以下Shell程序，它的输出是_____________ #!/bin/sh echo "ok,nice" loop=0 for str in "hello world" do loop=$(($loop+1)) echo "The $loop loop:$str" done A: ok,nice The 2 loop:hello world B: ok,nice The 1 loop:hello world C: The 1 loop:hello world D: ok,nice

请选出PL/SQL基本程序结构中属于循环结构的循环形式 A: WHILE-LOOP-END LOOP B: FOR-IN-LOOP-END LOOP C: LOOP—END LOOP D: IF-ELSE-END IF

下列关于Do…Loop循环结构执行循环体次数描述正确的是（）。 A: Do while…Loop循环可能不执行，Do…Loop Until循环至少可以执行一次。 B: Do while…Loop循环至少可以执行一次，Do…Loop Until循环可能不执行。 C: Do while…Loop和Do…Loop Until循环可能都不执行。 D: Do while…Loop和Do…Loop Until循环都至少执行一次。

The differences between Loop Lighting and Butterfly Lighting are______. A: The position of main light is lower for Loop Lighting B: The position of main light is higher for Loop Lighting C: The position of light source is closer to subject for Loop Lighting. D: The position of light source is farther to subject for Loop Lighting.

.下列关于 Do…Loop 循环结构执行循环体次数的描述正确的是_____ 。 A: Do While…Loop循环和Do…Loop Until循环至少都执行一次 B: Do While…Loop循环至少执行一次,Do…Loop Until循环可能一次都不执行 C: Do While…Loop循环和Do…Loop Until循环可能都不执行 D: Do While…Loop循环可能不执行,Do…Loop Until循环至少要执行一次