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关于质子密度加权像的叙述,错误的是( )。
下列说法中正确的是( )。
某病人要做腰穿检查,有恐惧感。从医德要求考虑,临床医生应向病人做的主要工作是()
马克思主义哲学对唯心主义哲学的科学态度是()
试述物流系统设计模型应遵循的一般准则。
税负转嫁的筹划通常需要借助()来实现。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
电气设备的金属外壳接地称为()
以上各项中只能在本医疗机构使用,不可上市销售的是()
甲的一头牛走失,乙牵回关入自家牛棚,准备次日寻找失主。当晚牛棚被台风刮倒,将牛压死。乙将牛肉和牛皮出售,各得款500元和100元。请人屠宰及销售,支出100元。下列哪一种说法是正确的?()
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The emergency alarm is sounded on ()according to master’s order.
The emergency alarm is sounded on ()(汽笛) according to master’s order.
In the emergency alarm signals, if the alarm or whistle two long sounds followed...
In the emergency alarm signals, if the alarm or whistle two long sounds followed...
When the general alarm is sounded continuously, the engine room personnel should...
When the general alarm is sounded continuously, the engine room personnel should...
The emergency signal for fires is sounded on the ship’s whistle and general alar...
The emergency signal for fires is sounded on the ship’s whistle and general alar...
The anchor was then()and the siren sounded.
alarm()