System类的方法有 A: arraycopy B: exit C: currentTimeMillis D: gc

利用System类中的()方法可以实现数组元素的复制 A: sort() B: arraycopy() C: copy（） D: copyof（）

使用arraycopy方法将数组a复制到b正确的是

Two systems of weights and measures used in the U.S. are ______. A: the U. S. Customary System and the metric system B: the International System and the metric system C: the Imperial System and the metric system D: the Customary System and the Imperial system

系统类Svstem中读取计算机系统属性的方法是( )。 A: getProperty（） B: arraycopy（ ) C: currentTimeMillis( ) D: gc( )

Starting system and ignition system belong to the electrical system？

What does the autopilot system include?? Hydraulic system|Mechanical system|Electrical system|All of above

The Atlantic Ocean is ( ). A: a closed system B: an open system C: an isolated system D: a homogeneous system

Engine system includes __________________, starting system, __________________ cooling system, fuel supply system, crank-connection rod mechanism and __________________.

What’s the type of the control system on CFM56-3 engine? ( ) A: pneumatic mechanical system B: EEC system C: FADEC system D: hydro-mechanical system