根据S0LAS公约无线电设备通则的规定，每艘船舶应设有（）。①一台能在70频道上接收
题型：单项选择题
问题：
根据S0LAS公约无线电设备通则的规定，每艘船舶应设有（）。
①一台能在70频道上接收和发送DSC的VHF无线电装置和一台保持DSC值班的无线电装置
②一台在9京赫频带上工作的雷达应答器
③一台NAVTEX
④一台卫星EPIRB
A.①③
B.①④
C.①②④
D.②④
题型：单项选择题
用所给动词的适当形式填空。
1. Can Jack __________ computer games? (play)
2. My friends want __________ (buy) some fruit for supper.
3. Daniel __________ (study) English, Chinese, Maths, and Art at school.
4. -- When __________ your lessons 
__________ (begin) every day?
-- At 7:45 a.m.
5. It's 8:30 p.m. The Greens __________ (watch) TV.
6. Let's __________ (clean) the classroom.
7. Our teacher always asks us __________ (not be) late for school.
8. Sandy often helps her mother __________ (cook) dinners.
9. __________ (close) the window, please. It's cold.
10. Kitty is my good friend. She enjoys __________ (dance) very much.