已知解放CA6102型发动机的配气相位角α=12°，β=68°，γ=42°，δ=18

某校伙食长期以面粉和大米为主食，面食每100 g含蛋白质6个单位，含淀粉4个单位，售价0.5元，米食每100 g含蛋白质3个单位，含淀粉7个单位，售价0.4元，学校要求给学生配制盒饭，每盒盒饭至少有8个单位的蛋白质和10个单位的淀粉，问应如何配制盒饭，才既科学又费用最少？

下列装置常用于实验室制取气体．根据给出的装置回答下列问题：

（1）指出编号仪器名称：①______，②______．

（2）实验室利用A装置制取氧气，反应原理用化学方程式表示为：______．利用C装置收集氧气的最佳时刻是______．

用收集到的氧气完成硫粉燃烧实验后，还需向集气瓶内加入适量氢氧化钠溶液，目的是：______（用化学方程式表示）．

（3）制取并收集二氧化碳应选择的装置是______（从A--E中选择），使用该套装置制取气体的突出优点是______，该反应原理用化学方程式表示为______．若改用F装置收集二氧化碳，则气体应从______端进入．

（4）将纯净的二氧化碳气体通入盛有蒸馏水的洗气瓶一段时间后，测得该装置中溶液的pH______（填“＞”、“＜”或“=”）7．

China is to send its top negotiator on North Korea’s nuclear program to Pyongyang (36) amid international concern over the launch of (37) .
While the (38) and its ally Japan push for (39) against North Korea, China is (40) , not sanctions.
Also, the (41) to Japan says sanctions on North Korea will (42) efforts to bring the secluded state back to (43) on its nuclear program.
North Korea (44) the six-party talks in (45) after Washington imposed financial sanctions for alleged counterfeiting and (46) activities.
A broadcast on North Korean State Television (47) the missile tests, in what it called a "successful (48) ".
It said North Korea will take action against anyone who (49) them.
The Minister is reported to have told a (50) that the missile launches were (51) because of America’s sanctions against Pyongyang.
North Korea remains (52) in the face of international condemnation and has warned (53) could be carried out.
UN Security Council members will (54) discussions tonight on whether a (55) condemning the missile launches should call for sanctions.

骨折愈合X线协助临床判断骨折后肢体能否持重的标志（）

A.内骨痂形成

B.外骨痂形成

C.内、外骨痂形成

D.成桥连接骨痂形成

E."骨痂托"形成

男性，25岁，急非淋M₂型经DA方案治疗后部分缓解，近日自觉左下肢疼痛，腰椎4～5椎旁压痛（+），直腿抬高试验（+），治疗方法应为（）

A.腰穿脑脊液检查，鞘内注射MTX

B.骨科治疗

C.大剂量化疗

D.放疗

E.细胞因子，如IL-2或IFN