【单选题】On the development of the electro-car, the main problem is ______.
B.
electricity is too expensive
C.
the speed of the car is not fast enough
D.
the weight of the battery
【单选题】Why does the writer of the letter that Electro-Robo is violent?
A.
It is control to radio water.
B.
It is expensive to buy.
【判断题】判断题 : 图解法适用于高频大信号情况。
【单选题】巴塞尔公约是关于什么的公约?
C.
关于在国际贸易中对某些危险化学品和农药采用事先知情同意程序的国际公约
D.
关于控制危险废物越境转移及其处置的国际公约。
【单选题】《巴塞尔公约》是关于什么的公约?( )。
C.
关于在国际贸易中对某些危险化学品和农药采用事先知情同意程序的国际公约
【判断题】理想是信念的延伸和体现,信念是理想的基础和支撑。
【单选题】Dual electro-hydraulic steering units usually operate ______.
A.
With both pumps on line at the same time
B.
With one pump on standby
C.
With the follow-up gear disconnected
D.
Only when the rudder is moved amidships