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【多选题】
全陪在旅游团抵达各站做好的旅游者安全工作主要有()等。A.
入店时提醒旅游者将贵重物品存放在饭店前的保险柜里
B.
睡觉门窗，不要躺在床上抽烟
C.
下车时提醒游客带好随声物品
D.
游览时协助旅游者看管好随身物品
E.
游览时注意旅游者动向，防止走失
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举一反三
【单选题】某塑料厂要将原生产板材的挤出机组改为生产管材,设备应作的调整是( )
A.
更换挤出主机和机头，保留辅机
B.
更换机头，保留挤出主机和辅机
C.
挤出主机、机头和辅机均应更换
D.
更换机头和辅机，保留挤出主机
【单选题】11×13×17×19×23 A decrease of 1 in which of the factors above would result in the greatest decrease in the product?
A.
11
B.
13
C.
17
D.
19
E.
23
【简答题】根据所提供图片画出服装效果图线稿,不要求上色。
【单选题】mysqli_connect( )与@mysqli_connect( )的区别是
A.
@mysqli_connect( ) 不会忽略错误 , 将错误显示到客户端
B.
mysqli_connect( ) 不会忽略错误 , 将错误显示到客户端
C.
没有区别
D.
功能不同的两个函数
【单选题】Which of the factors listed below might cause the Ricardian equivalence proposition to be violated?
A.
There may be international capital inflows and outflows.
B.
Consumers may not understand that an increase in government borrowing today is likely to lead to higher future taxes.
C.
There may be constraints on the level of government spending.
D.
There may be constraints on the level of government taxation.
【单选题】Which of the factors listed has the greatest effect on the mechanical efficiency of a diesel engine?（）
A.
temperature of the intake air
B.
friction within the engine
C.
mechanical condition of the supercharger
D.
mechanical condition of the turbocharger
【简答题】使用关键字 可以在一个函数中设置一个全局变量。
【单选题】What happened in 1215 in Britain?
A.
It was the year of Norman Conquest in British history.
B.
Forced by barons, King John signed the Magna Carta.
C.
Henry Ⅳ granted the Commons the power to review money grants.
D.
King Egbert united England under his rule.
【单选题】mysqli_connect()与@mysqli_connect()的区别是
A.
@mysqli_connect()不会忽略错误，将错误显示到客户端
B.
无区别
C.
mysqli_connect()不会忽略错误，将错误显示到客户端
D.
功能不同的两个函数
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