| 阅读理解。 |
| Skin-diving (潜水) is a new sport today. This sport takes you to a new wonderful world. It is like a visit to the moon! When you are under the water, it is easy for you to climb big rocks (岩石), because you are no longer (不再) heavy. Here, under the water, everything is blue and green. During the day, there is enough light. When fish swim nearby, you can catch them with your hands. When you have a tank (罐) of air on your back, you can stay in deep (深) water for a long time. But you must be careful when you dive in deep water. To catch fish is one of the most interesting parts of this sport. Besides (除此以外), there are more uses for skin-diving. You can clean ships without taking them out of the water. You can get many things from the deep water. Now you see the skin-diving is useful and interesting. |
| 1. Skin-diving is going to take you to _____. |
[ ] |
| A. the deep water B. be in danger C. mountains |
| 2. You can climb big rocks easily under the water because _____. |
[ ] |
| A. you are stronger B. the fish nearby help you C. you are lighter than on land |
| 3. Under the water, a skin-diver _____ in the daytime. |
[ ] |
| A. can see everything clearly B. can't see anything clearly C. can see nothing |
| 4. With a tank of air on your back, you can _____. |
[ ] |
| A. catch fish very easily B. stay under the water for a long time C. have more fun |
| 5. From the passage we can know that skin-diving is _____. |
[ ] |
| A. harmful B. not useful C. useful and interesting |
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绝经后 * * 不规则出血应考虑以下哪些疾病()
A．宫颈癌
B．老年性 * * 炎
C．子宫体癌
D．子宫肌瘤
E．细菌性 * * 病
完全流产的处理
A．宫颈妊娠
B．子宫残角妊娠
C．腹腔妊娠
D．卵巢妊娠破裂
E．输卵管妊娠流产
搬运时，搬运的过道应（），如在夜间搬运应有足够的照明。
A.有人监护
B.平坦畅通
C.事先整理
将时间分为整体、阶段、瞬时三个阶段进行管理的时间管理方法是（）
A.四象限时间管理法
B.区域管理法
C.ABC时间管理法
D.PATC管理法
E.PBL管理法
某厂一台12000kW机组带额定负荷运行，由一台循泵增加至两台循泵运行，凝汽器真空率由H1=90%上升至H2=95%。增加一台循泵运行，多消耗电功率N=150kW。试计算这种运行方式的实际效益（在各方面运行条件不变的情况下，凝汽器真空率每变化1%，机组效益变化1%）。