1.When a coil fin is straightened, the result is:
1.当线圈翅片被拉直时,结果是:
2.To reverse the rotation of a 460V 3-phase motor, you should switch:
2.要反转一台460V三相电机的旋转方向,应该交换:
3.A 240V, 4-pole, 60-Hz motor operates at approximately:
3.一台240V、4极、60Hz的电机大约以以下哪个转速运行:
4.The room ______ should be positioned where it can sense air in the natural circulation path.
4.房间______应该放置在能够感知自然循环路径中空气的位置。
5.When connecting two fans in parallel, the thermostatic bulb should be positioned:
5.并联两个风扇时,温控感温包应位于:
6.What device regulates the operation of the gas solenoid?
6.什么装置控制气体电磁阀的运行?
7.A gauge suitable for ultra-high vacuum readings is a:
7.适用于超高真空读数的压力表是:
8.Manifold gas pressure is tested using a:
8.歧管气体压力测试使用:
9.When current flow in an electrical circuit drops, the heating effect:
9.当电路中的电流下降时,发热效应:
10.Which type of capacitor is commonly used as a starting capacitor for compressor motors?
10.哪种电容器通常用作压缩机电机的启动电容器?