注水泵运行要严格按操作规程进行，不得（）启动机泵。A、强制 B、按时 C、按规定 D

下列选项中不是急性非特异性心包炎的特点（）

A．心包叩击音

B．胸痛

C．发热

D．X线心影增大

E．可累及心肌

缓解期宜采用的治疗

A．扶正固本、免疫治疗

B．预防性应用抗生素

C．祛痰止咳剂

D．小剂量皮质激素

E．支气管扩张剂

某企业每年需耗用某材料9000吨，该材料单位储存成本2元，平均每次进货费用90元。该批材料的经济进货批量为（）吨。

A．900

B．800

C．700

D．600

8个月小儿应接种

A．卡介苗
B．乙肝疫苗
C．脊髓灰质炎疫苗
D．百白破混合制剂
E．麻疹疫苗

阅读理解。

     You know the drill when it comes to losing weight-take in fewer calories, burn more calories. But you

also know that most diets and quick weight-loss plans have about as much substance as a politician's campaign

pledges. You're better off finding several simple things you can do on a daily basis-along with following the

cardinal rules of eating more vegetables and less fat and getting more physical activity. Together, they should

send the scale numbers in the right direction: down.

     1. Treat high-calorie foods as jewels in the crown. Make a spoonful of ice cream the jewel and a bowl

of fruit the crown. Balance a little cheese with a lot of salad.

     2. Eat five or six small meals or snacks a day instead of three large meals. A 1999 South African

study found that when men ate parts of their morning meal at intervals over five hours, they consumed almost

30 percent fewer calories at lunch than when they ate a single breakfast. Other studies show that even if you

eat the same number of calories distributed this way, your body releases less insulin, which keeps blood sugar

steady and helps control hunger.

     3. Walk for 45 minutes a day. The reason we're suggesting 45 minutes instead of the typical 30 is that a

Duke University study found that while 30 minutes of daily walking is enough to prevent weight gain in most

relatively sedentary (久坐的) people, exercise beyond 30 minutes results in weight and fat loss. Burning an

additional 300 calories a day with three miles of brisk walking (45 minutes should do it) could help you lose 30

pounds in a year without even changing how much you're eating.

     4. Bring the color blue into your life more often. There's a good reason you won't see many fast-food

restaurants decorated in blue; Believe it or not, the color blue functions as an appetite suppressant. So serve up

dinner on blue plates, dress in blue while you eat, and cover your table with a blue tablecloth. Conversely, avoid

red, yellow, and orange in your dining areas. Studies find they encourage eating.

     5. Clean your closet of the "fat" clothes. Once you've reached your target weight, throw out or give

away every piece of clothing that doesn't fit. The idea of having to buy a whole new wardrobe if you gain the

weight back will serve as a strong incentive to maintain your new figure.

1. The passage aims to _____.

A. advertise weight-loss products

B. give advice on losing weight

C. persuade you to go on a diet

D. talk you into giving away clothing that doesn't fit

2. According to the passage, which of the following is true?

A. ice cream can be made into the jewel.

B. the color blue encourages eating.

C. many fast-food restaurants are decorated in blue.

D. Eating five or six small meals helps reduce weight.

3. We can infer from the passage that _____.

A. cheese is high in calories

B. a big meal helps control hunger

C. a 45-minute walk a day discourages your appetite for food

D. buying new clothes can reduce weight

4. The author agrees _____.

A. quick weight-loss plans work well

B. people should cat more fruit to lose weight

C. going on a diet is they only way to lose weight

D. restaurants should serve food with blue plates