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问题 单项选择题

某硫磺回收装置若一级克劳斯反应器进口过程气流量为3000m3/h，若反应器克劳斯催化剂空速为500h-1，则反应器内装填（）吨克劳斯催化剂。（克劳斯催化剂比重为800kg/m3）

A、1.6

B、3.75

C、4.8

D、6

答案

参考答案：C

单项选择题

下列有关心肌炎病因的叙述正确的是

A．脊髓灰质炎病毒不是心肌炎的致病病毒

B．病毒感染所致的心肌炎约占心肌炎的半数

C．皮肌炎最终可累及心脏，但不导致心肌炎症性改变

D．白喉杆菌已不再是心肌炎的致病菌

E．链球菌感染所致的心肌炎并无减少趋势
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单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

A total of 72 passengers are on a ship, and they go out on an excursion in boats R and Q. How many of the ship’s passengers are female ？（）
(1) There are 13 females on boat Q.
(2) There are equal numbers of women on boats R and Q.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.
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