节温器有()和()两种;装在()中;它能自动调节冷却水的循环路线和流量以保证发动机启动后能很快升温,运转时不致出现水温过高或过低。
参考答案:蜡式;醚或醇式;出水管
某企业2006年经常项目外汇收入为1000万美元,经常项目外汇支出为800万美元。根据外汇管理法律制度的规定,该企业2007年经常项目外汇账户保留的现汇不得超过 ( )万美元。
A.800
B.1000
C.1200
D.1800
Despite (1) that alcoholic beverages may (2) , a leading medical expert is advising: don’t (3) just yet. Anybody who’s ever worked in a hospital sees the hospital is full of patients that have (4) disease, but the hospital is not full of patients that have disease related to cholesterol and (5) . In an (6) in the current New England Journal of Medicine, Dr. Goldberg of Columbia University said it is time to see (7) prevents heart disease. Such a study would give (8) to one group of heart disease patients and not to another, and see (9) . In the latest study, which followed (10) over a 12-year period, researchers found that those who drank (11) drinks per week (12) of heart attack by (13) compared to (14) . The lead author, (15) Kenneth Mukamal of Beth Israel Deaconess Medical Center in Boston, insists his study is (16) . For one thing, other studies have not looked at (17) . Dr. Mukamal says (18) also appear to settle which alcoholic beverage are (19) . "Beer and spirits, beer and liquor, were most ply (20) ."