【单选题】在GMDSS系统中,A3海区是指()。
B.
Inmarsat卫星所覆盖的海域,但不包括A1、A2海区
【单选题】The car wants ______.
【多选题】工程质量缺陷是指各类影响工程结构、使用功能和外形观感的常见性质量损伤。
【单选题】The flywheel reduces speed fluctuations by ________.
A.
maintaining a constant rack setting
B.
storing kinetic energy
C.
maintaining equal exhaust pressure
D.
maintaining even camshaft speed
【单选题】What will Mr. Lowe most likely do this afternoon?
A.
He will accompany guests to the airport.
B.
He will enter contract negotiations.
C.
He will attend a board meeting.
D.
He will compose a report.
【单选题】外出季节性较弱、对价格较为敏感、选择自由度较差指的是( )。
【单选题】过共析钢奥氏体化正确的加热临界点是( )
【单选题】β受体阻断药物对下列心律失常疗效最好的是()