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【单选题】
当对数据库进程调整时,要求除DBA用户外的其它用户都不能访问数据库,这时可以用以下哪种数据库启动方式( )A.
STARTUP NOMOUNT
B.
STARTUP MOUNT
C.
STARTUP RESTRICT
D.
STARTUP DBA
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反馈参考答案：
举一反三
【单选题】The sensor provides instantaneous manifold pressure information to the engine 's control unit(ECU)
A.
crank sensor
B.
knock sensor
C.
MAP
D.
throttle body
【单选题】The appearance of the used car is , it's much newer than it really is.
A.
descriptive
B.
indicative
C.
deceptive
D.
impressive
【单选题】What is the name of the sensor that monitors the amount of oxygen in the engine’s exhaust gases?
A.
The air mass flow sensor
B.
The oxygen sensor
C.
The manifold absolute pressure sensor
D.
The throttle position sensor
【简答题】A sensor’s ( ) indicates how much the sensor’s output changes when the measured quantity changes
【简答题】合金工具钢按用途分为哪两类?并简述合金工具钢应具备哪些性能?
【简答题】A sensor's sensitivity indicates how much the sensor's output changes when the measure quantity changes.
【简答题】营养液每次输入剂量不超过()ml,间隔时间不低于()小时,输入时温度保持恒定在()°
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