在引导模式下，司机应当在每60s之内或运行()按下警惕键，否则列控车载设备将触动紧急制动。
A. 300m
B. 300m以前
C. 200m以前
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What is the main idea of the news item？
A. The European Commission is considering a plan to protect tourists" personal data.
B. A plan which aims to make European tourists" visits to America easier is approved.
C. The United States Congress is negotiating on behalf of the European countries.
D. The online checking system will make it more convenient to visit the United States.
______ is committed to mediating the dispute between Israel and Syria.
A. Palestine
B. The United States
C. Turkey
D. The Middle East
What is the main idea of the news item？
A. Some of the office workers have breathlessness.
B. Few milk powder factory workers experience wheezing.
C. Mothers and babies benefit the most from respiratory tests.
D. There is a link between asthma and exposure to milk powder.
对患者采取手术治疗，术后36小时患者出现手足抽搐，最恰当的处理是
A. 应用镇静剂
B. 静脉注射10％氯化钙溶液，口服维生素D3
C. 应用氢化可的松
D. 应用二氢速固醇
E. 应用降钙素
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