用斧砍削的操作中，如节子在方料的一面时，应从双面砍削。( )

下列关于跨商品.套利的说法，正确的是（）。[2010年9月真题]

A.当小麦期货价格高出玉米期货价格的程度远大于市场正常年份的水平，应同时买入玉米期货合约、卖出小麦期货合约进行套利

B.当小麦期货价格高出玉米期货价格的程度远小于市场正常年份的水平，应同时卖出玉米期货合约、买入小麦期货合约进行套利

C.当小麦期货价格高出玉米期货价格的程度远小于市场正常年份的水平，应同时卖出小麦期货合约、买入玉米期货合约进行套利

D.当小麦期货价格高出玉米期货价格的程度远大于市场正常年份的水平，应同时买入小麦期货合约、卖出玉米期货合约进行套利

阅读理解。

     What time is it? Most people are pretty accurate in their answer. And if you don't know for sure, it's a

very likely that you can find out. There may be a watch on your wrist, there may be a clock on the wall,

desk, or computer screen; or maybe you're riding in a car that has a clock in the dashboard (仪表板).

     Even if you don't have a timepiece of some sort nearby, your body keeps its own beat. Humans have an

internal clock that regulates (调节) the beating of our heart, the pace of our breathing, the discharge (排出)

of chemicals within our bloodstream, and many other bodily functions.

     Time is something from which we can't escape. Even if we ignore it, it's still going by, ticking away,

second by second, minute by minute, hour by hour. So the main issue in using your time well is, "Who's in

charge?" We can allow time to slip by and let it be our enemy. Or we can take control of it and make it our

ally.

     By taking control of how you spend your time, you'll increase your chances of becoming a more

successful student. Perhaps more importantly, the better you are at managing the time you devote to your

studies, the more time you'll have to spend on your outside interests.

     The aim of time management is not to schedule every moment so we become slaves of a timetable that

governs every waking moment of the day. Instead, the aim is to make informed choices as to how we use

our time. Rather than letting the day go by, largely without our awareness, what we are going to discuss

next can make us better able to control time for our own purposes.

1. The underlined word "ally" in Para. 3 more likely means somebody or something that is _____.

A. your slave and serves you

B. your supporter and helps you

C. under your control and obeys you

D. under your influence and follows you

2. The author intends to tell us that time ______.

A. could be regulated by a timepiece such as a clock or a watch

B. could be managed by the internal clock of human bodies

C. should be well managed for our own interest

D. should be saved for outside interests

3. In the next part, the author would most probably discuss with you ______.

A. how to keep up with the times

B. how to make up for lost time

C. how to have a good time

D. how to make good use of time

发现电容器运行中“鼓肚”应该（）。

A、继续观察

B、降低电压运行

C、立即停运

D、等待检修

关于窝沟封闭剂，以下说法正确的是（）

A.自凝固化型窝沟封闭剂固化封闭时间少

B.先固化型窝沟封闭剂一般为双液剂型

C.自凝固化型窝沟封闭剂的固化不受填料及温度影响

D.光固化封闭剂采用的引发剂不同于自凝固化封闭剂

E.窝沟封闭剂因为强度较低，不可以作为洞衬剂使用

公民在请求国家赔偿时，可以（）。

A.直接向人民法院提出赔偿诉讼（只能附带）

B.直接向赔偿义务机关提出

C.在行政诉讼中一并提出

D.在行政复议中一并提出