为了获得良好的光面爆破效果,采用的技术措施有()。
A.选用低爆速炸药
B.采用不偶合装药
C.选用高爆速炸药
D.采用偶合装药
E.采用爆炸威力大的炸药
参考答案:A, B, E
在人群中慢性携带致病性金黄色葡萄球菌的人约为()。
A.15%
B.25%
C.35%
D.45%
E.55%
从A-G中选出能填入空白处的最佳选项补全对话(选项中有两项是多余的)。
A: What bad weather! I don't like the rain.
B: Yes. 1
A: Will it last long?
B: No,it won't. 2
A: How do you know?
B:The radio says 3
A: Oh, 4 I'm going out to play today. Will you come with me!
B: 5 Let's play soccer.
A:OK. Come on.
A.It,s really heavy.
B.It's sunny now.
C. The rain will stop later on.
D. I think it'1l get better soon.
E. It'll be sunny tomorrow.
F.I hope not.
G.Certainly.
1. 2. 3. 4. 5.