正常情况下，人体电阻可以按（）来计算。一般认为（）以下是不会造成生命危险的。

单词拼写。

根据句子所给汉语注释,写出各单词的正确形式（每空只写一词）。

1. The competition for this special kind of job is _______(激烈的).

2. He lit a _______(香烟) in order to calm his mind.

3. His parents _______(雇佣) a tutor to teach him Greek last year.

4. The post arrives _______(有规律地) at eight every morning.

5. He dived from the bridge and rescued the _______(溺水的) child.

6. The traveler wrapped himself with a _______(毛毯).

7. Some people think that a _______(有意义的) life is enjoying every moment.

8. His father was _______(欺骗) of his large amount of money.

9. Several cars are _______(可利用的) within this price range.

10. I grant that your _______(解释) is reasonable.

Can you tell me what you’re going to_______ at the meeting?

A．tell

B．say

C．talk

D．speak

一艘长度为30m的机动船，但又不是一艘“只能在狭水道或航道内安全航行的船舶”，则该船：（）

A.根据良好的船艺，不应妨碍“只能在狭水道或航道内安全航行的船舶”的安全通行

B.根据《国际海上避碰规则》的规定，不应妨碍“只能在狭水道或航道内安全航行的船舶”的安全通行

C.根据《国际海上避碰规则》的规定，不应妨碍“限于吃水的船舶”的安全通行

D.根据《国际海上避碰规则》的规定，应给“只能在狭水道或航道内安全航行的船舶”让路

8086/8088系统中，每个逻辑段最多存储单元为( )。

A．1MB

B．根据程序的设置而定

C．256KB

D．64KB

若煤中全硫大于（），就不能以全硫代替弹筒硫来计算高位发热量。