拖锚制动法和拖轮协助制动法分别适用于：（）
A.船舶高速和低速情况
B.船舶低速和低速情况
C.船舶低速和高速情况
D.船舶高速和高速情况
参考答案：B
根据句意及汉语提示完成下列句子。
1. Franc is not a child at all. He can _______ _______ (照顾) himself well.
2. I'm sorry I couldn't _______ _______ (接通) to you last night.
3. Children should sleep _______ _______ (至少) ten hours every day.
4. Our football team will _______ _______ (同……比赛) yours this Friday afternoon.
Would you come and cheer them on?
5. To keep healthy, we should eat more fruit and vegetables ______ ______ (取代) meat.
药物中硫酸盐检查时，对照液中所含最适宜的S04 量
A．Ag(DDC)吡啶试液B．砷斑C．白田道夫法D．微孔滤膜法E．过硫酸铵
